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Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 2567210753

Certificate GIA 2567210753

Diamond specifications and retailer prices

From £1,706 GBP
$2,286 USD
As of October 30, 2026
Save £5,101 GBP (75%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £6,807 GBP at William & Sons Jewelers · As of October 31, 2026
View at William & Sons Jewelers

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2567210753. Listed at 17 retailers as of October 30, 2026, with prices from £1,706 to £6,807, a £5,101 spread on the same certified stone. William & Sons Jewelers lists it at £6,807. 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

1.51
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.5°
Pavilion angle34°
OriginNatural
Grading LabGIA
CertificateGIA 2567210753
Dimensions6.56 × 6.36 × 4.30 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizeNone
Top View
6.56 mm6.36 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2567210753
Side View
Table 63.0%Crown 38.5°Girdle: THN-STKPavilion 34°Culet: NoneDepth 67.6%

Caratlytics Score

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

Price History

Last verified: Oct 30
Current: £2,838 GBP|Low: £1,706 GBP|High: £8,797 GBP|Avg: £2,800 GBP
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
William & Sons Jewelers
November 1, 2026
Retailer 15£1,706 GBP
Retailer 12£1,815 GBP
Retailer 6£1,870 GBP
Retailer 4£1,888 GBP
Retailer 9£1,938 GBP
Retailer 11£2,004 GBP
Retailer 10£2,004 GBP
Retailer 5£2,341 GBP
Retailer 8£2,393 GBP
Retailer 14£2,470 GBP
Retailer 16£2,552 GBP
Retailer 13£2,624 GBP
Retailer 2£2,635 GBP
Retailer 3£2,819 GBP
Retailer 1£2,838 GBP
Retailer 7£4,039 GBP
William & Sons Jewelers£6,807 GBP

26 data points across 17 retailers

17 retailers£1,706 GBP to £6,807 GBP

A
Cheapest Retailer
-
£1,706 GBP
$2,286 USD
A
Retailer 2
-
£1,815 GBP
HK$19,000 HKD
View
A
Retailer 3
-
£1,888 GBP
$2,530 USD
View
A
Retailer 4
-
£1,938 GBP
$2,597 USD
View
A
Retailer 5
-
£2,004 GBP
$2,685 USD
View
A
Retailer 6
-
£2,004 GBP
A$4,131 AUD
View
A
Retailer 7
-
£2,341 GBP
$3,137 USD
View
Retailer 8
-
£2,393 GBP
$3,206 USD
View
Price last confirmed 25 days ago
A
Retailer 9
-
£2,470 GBP
$3,310 USD
View
Retailer 10
-
£2,482 GBP
SGD 4,494 SGD
View
Price last confirmed 24 days ago
A
Retailer 11
-
£2,552 GBP
$3,420 USD
View
A
Retailer 12
-
£2,624 GBP
€3,349 EUR
View
A
Retailer 13
-
£2,635 GBP
$3,530 USD
View
B+
Retailer 14
-
£2,819 GBP
View
A
Retailer 15
-
£2,838 GBP
$3,802 USD
View
Retailer 16
-
£4,039 GBP
View
Price last confirmed 25 days ago
Most Expensive
C
William & Sons Jewelers
cert_2567210753 · Oct 31
£6,807 GBP
$9,121 USD
View
Final sale: no returns
16 more retailers have this diamond
Prices start from £1,706 GBPSave up to £5,101 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
1.51ct Cushion
£1,706 GBP