CaratHunter
Plans
Cushion|Natural|GIA

1.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 2556337276

Certificate GIA 2556337276

Diamond specifications and retailer prices

From £3,048 GBP
$4,090 USD
As of November 2, 2026
Save £3,494 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £6,541 GBP at MOH London · As of November 2, 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 G 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 2556337276. Listed at 21 retailers as of November 2, 2026, with prices from £3,048 to £6,541, a £3,494 spread on the same certified stone. MOH London lists it at £6,541. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556337276
Dimensions6.70 × 6.64 × 4.37 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.70 mm6.64 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556337276
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 65.7%

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: Nov 2
Current: £6,541 GBP|Low: £3,005 GBP|High: £6,621 GBP|Avg: £4,118 GBP|-1.2%
MOH London
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
Retailer 20
November 2, 2026
Retailer 13£3,048 GBP
Retailer 15£3,052 GBP
Retailer 4£3,221 GBP
Retailer 10£3,382 GBP
Retailer 7£3,412 GBP
Retailer 20£3,435 GBP
Retailer 2£3,474 GBP
Retailer 11£3,476 GBP
Retailer 6£3,605 GBP
Retailer 19£3,636 GBP
Retailer 3£3,831 GBP
Retailer 16£3,870 GBP
Retailer 8£3,926 GBP
Retailer 14£3,938 GBP
Retailer 12£4,114 GBP
Retailer 18£4,646 GBP
Retailer 5£5,014 GBP
Retailer 17£5,015 GBP
Retailer 9£6,344 GBP
MOH London£6,541 GBP

21 data points across 20 retailers

21 retailers£3,048 GBP to £6,541 GBP

A
Cheapest Retailer
-
£3,048 GBP
$4,090 USD
A
Retailer 2
-
£3,052 GBP
HK$32,000 HKD
View
A
Retailer 3
-
£3,221 GBP
$4,323 USD
View
A
Retailer 4
-
£3,382 GBP
$4,538 USD
View
A
Retailer 5
-
£3,412 GBP
$4,579 USD
View
A
Retailer 6
-
£3,435 GBP
$4,609 USD
View
Final sale: no returns
A
Retailer 7
-
£3,474 GBP
€4,440 EUR
View
A
Retailer 8
-
£3,476 GBP
$4,665 USD
View
A
Retailer 9
-
£3,605 GBP
$4,838 USD
View
A
Retailer 10
-
£3,636 GBP
$4,879 USD
View
A
Retailer 11
-
£3,831 GBP
View
A
Retailer 12
-
£3,870 GBP
View
A
Retailer 13
-
£3,926 GBP
$5,269 USD
View
A
Retailer 14
-
£3,938 GBP
$5,285 USD
View
B+
Retailer 15
-
£4,068 GBP
A$8,398 AUD
View
Retailer 16
-
£4,114 GBP
A$8,493 AUD
View
Price last confirmed 23 days ago
B+
Retailer 17
-
£4,646 GBP
€5,938 EUR
View
B+
Retailer 18
-
£5,014 GBP
ZAR 108,691 ZAR
View
B+
Retailer 19
-
£5,015 GBP
$6,730 USD
View
Retailer 20
-
£6,344 GBP
$8,513 USD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
AD4A47712 · Nov 2
£6,541 GBP
View
20 more retailers have this diamond
Prices start from £3,048 GBPSave up to £3,494 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
£3,048 GBP