Round|Natural|GIA

1.20ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 2527585822

Certificate GIA 2527585822

Diamond specifications and retailer prices

From £2,556 GBP
$3,425 USD
As of October 25, 2026
Save £2,659 GBP (51%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £5,697 GBP at NZ Jewellers · As of September 28, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2527585822. Listed at 21 retailers as of October 25, 2026, with a 104% 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2527585822
Dimensions6.82 × 6.80 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
6.82 mm6.80 mm1.20 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2527585822
Side View
Table 58.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.4°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: £3,156 GBP|Low: £2,279 GBP|High: £5,271 GBP|Avg: £3,541 GBP|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 7£2,556 GBP
Retailer 8£2,735 GBP
Retailer 3£2,974 GBP
Retailer 1£3,156 GBP
Retailer 2£3,324 GBP
Retailer 4£3,485 GBP
Retailer 9£3,488 GBP
Retailer 5£3,982 GBP
Retailer 6£5,215 GBP

43 data points across 9 retailers

21 retailers£2,556 GBP to £5,215 GBP

A
Cheapest Retailer
-
£2,556 GBP
$3,425 USD
A
Retailer 2
-
£2,607 GBP
$3,493 USD
View
A
Retailer 3
-
£2,735 GBP
$3,664 USD
View
Final sale: no returns
B+
Retailer 4
-
£2,825 GBP
$3,785 USD
View
B+
Retailer 5
-
£2,911 GBP
$3,900 USD
View
Retailer 6
-
£2,962 GBP
$3,969 USD
View
Price last confirmed 29 days ago
Retailer 7
-
£2,962 GBP
$3,969 USD
View
Price last confirmed 31 days ago
B+
Retailer 8
-
£2,974 GBP
A$6,131 AUD
View
B+
Retailer 9
-
£3,156 GBP
View
B+
Retailer 10
-
£3,324 GBP
View
B+
Retailer 11
-
£3,344 GBP
$4,480 USD
View
B+
Retailer 12
-
£3,344 GBP
$4,480 USD
View
Retailer 13
-
£3,418 GBP
$4,580 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
£3,444 GBP
$4,614 USD
View
B+
Retailer 15
-
£3,456 GBP
$4,630 USD
View
B+
Retailer 16
-
£3,485 GBP
€4,447 EUR
View
Retailer 17
-
£3,488 GBP
A$7,190 AUD
View
Price last confirmed 21 days ago
Retailer 18
-
£3,699 GBP
$4,956 USD
View
Price last confirmed 8 days ago
B+
Retailer 19
-
£3,982 GBP
ZAR 86,191 ZAR
View
B
Retailer 20
-
£5,215 GBP
View
Most Expensive
NZ Jewellers
edb8209f-f13d-4790-8314-98fb76eb4070 · Sep 28
£5,697 GBP
$7,633 USD
View
Price last confirmed 33 days ago
20 more retailers have this diamond
Prices start from £2,556 GBPSave up to £2,659 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.

A
1.20ct Round
£2,556 GBP