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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2231926496

Certificate GIA 2231926496

Diamond specifications and retailer prices

From £4,223 GBP
$5,659 USD
As of October 31, 2026
Save £3,864 GBP (48%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £8,088 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231926496. Listed at 14 retailers as of October 31, 2026, with prices from £4,223 to £8,088, a £3,864 spread on the same certified stone. MOH London lists it at £8,088. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Pavilion angle35.83°
OriginNatural
Grading LabGIA
CertificateGIA 2231926496
Dimensions7.45 × 5.87 × 4.09 mm
L/W Ratio1.27
Key to symbols
Twinning Wisp, Crystal, Feather
Top View
7.45 mm5.87 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2231926496
Side View
Table 62.0%CrownGirdle: THK-VTKPavilion 35.83°Culet: NoneDepth 69.8%

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 31
Current: £8,088 GBP|Low: £4,209 GBP|High: £8,185 GBP|Avg: £5,685 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 9£4,223 GBP
Retailer 5£4,853 GBP
Retailer 8£4,853 GBP
Retailer 10£4,866 GBP
Retailer 3£5,471 GBP
Retailer 7£5,546 GBP
Retailer 6£5,595 GBP
Retailer 2£6,340 GBP
Retailer 4£7,130 GBP
MOH London£8,088 GBP

44 data points across 10 retailers

14 retailers£4,223 GBP to £8,088 GBP

A
Cheapest Retailer
-
£4,223 GBP
$5,659 USD
B+
Retailer 2
-
£4,585 GBP
$6,143 USD
View
B+
Retailer 3
-
£4,592 GBP
$6,153 USD
View
B+
Retailer 4
-
£4,649 GBP
$6,229 USD
View
B+
Retailer 5
-
£4,853 GBP
$6,502 USD
View
Final sale: no returns
B+
Retailer 6
-
£4,853 GBP
$6,502 USD
View
B+
Retailer 7
-
£4,866 GBP
$6,520 USD
View
B+
Retailer 8
-
£5,471 GBP
View
B+
Retailer 9
-
£5,546 GBP
$7,431 USD
View
Retailer 10
-
£5,595 GBP
A$11,533 AUD
View
Price last confirmed 11 days ago
B+
Retailer 11
-
£6,340 GBP
€8,090 EUR
View
Retailer 12
-
£6,394 GBP
$8,567 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
£7,130 GBP
ZAR 154,335 ZAR
View
Most Expensive
B
MOH London
75DE28E9A · Nov 1
£8,088 GBP
View
13 more retailers have this diamond
Prices start from £4,223 GBPSave up to £3,864 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
£4,223 GBP