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Cushion|Natural|GIA

1.51ct L SI2 Cushion Natural Diamond

EX • L/SI2 • GIA 7551616311

Certificate GIA 7551616311

Diamond specifications and retailer prices

From £1,148 GBP
As of November 5, 2026
Save £294 GBP (20%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,441 GBP at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded L colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551616311. Listed at 3 retailers as of November 5, 2026, with prices from £1,148 to £1,441, a £294 spread on the same certified stone. GemTrove lists it at £1,441. 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
L
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551616311
Dimensions6.40 × 6.18 × 4.29 mm
L/W Ratio1.04
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Needle
Top View
6.40 mm6.18 mm1.51 ctL / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551616311
Side View
Table 66.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 69.4%

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: Nov 5
Current: £1,441 GBP|Low: £1,148 GBP|High: £1,441 GBP|Avg: £1,282 GBP
GemTrove
Retailer 2
Retailer 3
November 5, 2026
Retailer 3£1,148 GBP
Retailer 2£1,236 GBP
GemTrove£1,441 GBP

39 data points across 3 retailers

3 retailers£1,148 GBP to £1,441 GBP

A
Cheapest Retailer
-
£1,148 GBP
A
Retailer 2
-
£1,236 GBP
View
Most Expensive
B+
GemTrove
GT-N-00967885-98 · Nov 6
£1,441 GBP
A$2,968 AUD
View
2 more retailers have this diamond
Prices start from £1,148 GBPSave up to £294 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
£1,148 GBP