Round|Natural|GIA

1.20ct J SI1 Round Natural Diamond

EX • J/SI1 • GIA 2547444059

Certificate GIA 2547444059

Diamond specifications and retailer prices

From £2,166 GBP
$2,902 USD
As of October 31, 2026
Save £377 GBP (15%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £3,983 GBP at NZ Jewellers · As of October 20, 2026
View at NZ Jewellers

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2547444059. Listed at 26 retailers as of October 30, 2026, with a relatively tight 17% spread, which is unusual at this carat range and suggests competitive pricing across the listings. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
J
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2547444059
Dimensions6.73 × 6.77 × 4.26 mm
L/W Ratio1.01
Top View
6.73 mm6.77 mm1.20 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547444059
Side View
Table 57.0%CrownGirdle: UNDPavilionCulet: NoneDepth 63.1%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £3,983 GBP|Low: £1,855 GBP|High: £3,983 GBP|Avg: £2,502 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
October 30, 2026
Retailer 3£1,855 GBP
Retailer 10£1,919 GBP
Retailer 5£1,945 GBP
Retailer 4£2,034 GBP
Retailer 9£2,071 GBP
Retailer 16£2,096 GBP
Retailer 21£2,166 GBP
Retailer 13£2,169 GBP
Retailer 20£2,264 GBP
Retailer 15£2,286 GBP
Retailer 17£2,342 GBP
Retailer 14£2,358 GBP
Retailer 23£2,358 GBP
Retailer 12£2,390 GBP
Retailer 22£2,407 GBP
Retailer 8£2,440 GBP
Retailer 6£2,442 GBP
Retailer 2£2,543 GBP
Retailer 11£2,653 GBP
Retailer 19£2,775 GBP
Retailer 7£3,330 GBP
Retailer 18£3,843 GBP
NZ Jewellers£3,983 GBP

35 data points across 23 retailers

26 retailers£2,166 GBP to £2,543 GBP

Retailer 1
-
£1,855 GBP
$2,485 USD
Price last confirmed 11 days ago
Retailer 2
-
£1,919 GBP
$2,571 USD
View
Price last confirmed 10 days ago
Retailer 3
-
£1,945 GBP
$2,606 USD
View
Price last confirmed 11 days ago
Retailer 4
-
£2,034 GBP
$2,725 USD
View
Price last confirmed 9 days ago
Retailer 5
-
£2,071 GBP
$2,775 USD
View
Price last confirmed 15 days ago
Retailer 6
-
£2,071 GBP
$2,775 USD
View
Price last confirmed 11 days ago
Retailer 7
-
£2,096 GBP
$2,809 USD
View
Price last confirmed 13 days ago
Retailer 8
-
£2,151 GBP
$2,882 USD
View
Price last confirmed 16 days ago
B
Retailer 9
-
£2,166 GBP
$2,902 USD
View
Retailer 10
-
£2,169 GBP
View
Price last confirmed 9 days ago
B+
Retailer 11
-
£2,264 GBP
CA$4,214 CAD
View
Retailer 12
-
£2,286 GBP
$3,063 USD
View
Price last confirmed 38 days ago
Retailer 13
-
£2,342 GBP
View
Price last confirmed 10 days ago
Retailer 14
-
£2,358 GBP
$3,160 USD
View
Price last confirmed 11 days ago
Retailer 15
-
£2,390 GBP
$3,202 USD
View
Price last confirmed 10 days ago
B
Retailer 16
-
£2,407 GBP
$3,225 USD
View
Retailer 17
-
£2,440 GBP
$3,270 USD
View
Price last confirmed 10 days ago
Retailer 18
-
£2,442 GBP
A$5,035 AUD
View
Price last confirmed 24 days ago
B
Retailer 19
-
£2,543 GBP
€3,245 EUR
View
Retailer 20
-
£2,638 GBP
$3,534 USD
View
Price last confirmed 39 days ago
Retailer 21
-
£2,653 GBP
$3,555 USD
View
Price last confirmed 17 days ago
Retailer 22
-
£2,775 GBP
ZAR 60,071 ZAR
View
Price last confirmed 14 days ago
Retailer 23
-
£3,330 GBP
$4,462 USD
View
Price last confirmed 10 days ago
Retailer 24
-
£3,843 GBP
View
Price last confirmed 10 days ago
Retailer 25
-
£3,983 GBP
$5,337 USD
View
Price last confirmed 40 days ago
Most Expensive
NZ Jewellers
8ca6cc3f-5d38-4fea-9bc9-3f6e060610fe · Oct 20
£3,983 GBP
$5,337 USD
View
Price last confirmed 11 days ago
25 more retailers have this diamond
Prices start from £2,166 GBPSave up to £377 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.20ct Round
£2,166 GBP