Oval|Natural|GIA

1.20ct H SI1 Oval Natural Diamond

EX • H/SI1 • GIA 6545562350

Certificate GIA 6545562350

Diamond specifications and retailer prices

From £2,425 GBP
As of November 1, 2026
Save £2,618 GBP (52%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: £5,254 GBP at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545562350. Listed at 27 retailers as of November 1, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6545562350
Dimensions8.57 × 6.14 × 3.50 mm
L/W Ratio1.40
Top View
8.57 mm6.14 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6545562350
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,084 GBP|Low: £1,703 GBP|High: £5,104 GBP|Avg: £3,104 GBP|+32.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 3, 2026
Retailer 11£1,703 GBP
Retailer 9£2,425 GBP
Retailer 7£2,566 GBP
Retailer 8£2,622 GBP
Retailer 17£2,732 GBP
Retailer 18£2,779 GBP
Retailer 19£2,864 GBP
Retailer 12£2,941 GBP
Retailer 1£3,084 GBP
Retailer 5£3,093 GBP
Retailer 6£3,093 GBP
Retailer 2£3,182 GBP
Retailer 4£3,190 GBP
Retailer 10£3,219 GBP
Retailer 3£3,233 GBP
Retailer 13£3,411 GBP
Retailer 15£3,706 GBP
Retailer 16£4,402 GBP
Retailer 14£5,043 GBP

38 data points across 19 retailers

27 retailers£2,425 GBP to £5,043 GBP

B+
Cheapest Retailer
-
£2,425 GBP
Retailer 2
-
£2,566 GBP
View
Price last confirmed 7 days ago
Retailer 3
-
£2,614 GBP
View
Price last confirmed 66 days ago
B+
Retailer 4
-
£2,622 GBP
View
Retailer 5
-
£2,732 GBP
View
Price last confirmed 8 days ago
Retailer 6
-
£2,732 GBP
View
Price last confirmed 43 days ago
Retailer 7
-
£2,732 GBP
View
Price last confirmed 29 days ago
Retailer 8
-
£2,732 GBP
View
Price last confirmed 29 days ago
B+
Retailer 9
-
£2,779 GBP
View
Retailer 10
-
£2,837 GBP
View
Price last confirmed 38 days ago
B+
Retailer 11
-
£2,864 GBP
View
B+
Retailer 12
-
£2,941 GBP
View
B
Retailer 13
-
£3,084 GBP
View
B
Retailer 14
-
£3,093 GBP
View
B
Retailer 15
-
£3,093 GBP
View
Retailer 16
-
£3,152 GBP
View
Price last confirmed 38 days ago
B
Retailer 17
-
£3,182 GBP
View
B
Retailer 18
-
£3,190 GBP
View
B
Retailer 19
-
£3,219 GBP
View
Retailer 20
-
£3,233 GBP
View
Price last confirmed 33 days ago
B
Retailer 21
-
£3,411 GBP
View
B
Retailer 22
-
£3,706 GBP
View
Retailer 23
-
£3,947 GBP
View
Price last confirmed 69 days ago
B
Retailer 24
-
£4,402 GBP
View
B
Retailer 25
-
£5,043 GBP
View
Retailer 26
-
£5,254 GBP
View
Price last confirmed 38 days ago
Most Expensive
NZ Jewellers
cd556a2b-b5c6-4984-bec9-63804a495a5b · Sep 24
£5,254 GBP
$7,032 USD
View
Price last confirmed 42 days ago
26 more retailers have this diamond
Prices start from £2,425 GBPSave up to £2,618 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 Oval
£2,425 GBP