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Cushion|Natural|GIA

1.51ct G SI1 Cushion Natural Diamond

EX • G/SI1 • GIA 6555086321

Certificate GIA 6555086321

Diamond specifications and retailer prices

From £2,430 GBP
As of November 4, 2026
Save £2,118 GBP (47%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,548 GBP at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 6555086321. Listed at 15 retailers as of November 4, 2026, with prices from £2,430 to £4,548, a £2,118 spread on the same certified stone. Wholesale Diamonds Direct lists it at £4,548. 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 6555086321
Dimensions6.90 × 6.15 × 4.22 mm
L/W Ratio1.12
Top View
6.90 mm6.15 mm1.51 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555086321
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.7%

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 4
Current: £3,794 GBP|Low: £2,430 GBP|High: £4,811 GBP|Avg: £3,219 GBP|-7.8%
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
Wholesale Diamonds Direct
November 6, 2026
Retailer 8£2,430 GBP
Retailer 10£2,471 GBP
Retailer 6£2,489 GBP
Retailer 13£2,553 GBP
Retailer 9£2,597 GBP
Retailer 5£2,654 GBP
Retailer 7£2,808 GBP
Retailer 11£3,048 GBP
Retailer 2£3,098 GBP
Retailer 3£3,140 GBP
Retailer 1£3,794 GBP
Retailer 12£4,099 GBP
Retailer 4£4,356 GBP
Wholesale Diamonds Direct£4,548 GBP

29 data points across 14 retailers

15 retailers£2,430 GBP to £4,548 GBP

A
Cheapest Retailer
-
£2,430 GBP
A
Retailer 2
-
£2,471 GBP
View
A
Retailer 3
-
£2,489 GBP
View
A
Retailer 4
-
£2,553 GBP
View
A
Retailer 5
-
£2,597 GBP
View
A
Retailer 6
-
£2,654 GBP
View
A
Retailer 7
-
£2,808 GBP
View
A
Retailer 8
-
£3,048 GBP
View
A
Retailer 9
-
£3,098 GBP
View
A
Retailer 10
-
£3,140 GBP
View
A
Retailer 11
-
£3,166 GBP
View
A
Retailer 12
-
£3,794 GBP
View
A
Retailer 13
-
£4,099 GBP
View
B+
Retailer 14
-
£4,356 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
444917161 · Nov 6
£4,548 GBP
$6,087 USD
View
14 more retailers have this diamond
Prices start from £2,430 GBPSave up to £2,118 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
£2,430 GBP