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Cushion|Natural|GIA

1.51ct K SI2 Cushion Natural Diamond

VG • K/SI2 • GIA 6555632824

Certificate GIA 6555632824

Diamond specifications and retailer prices

From £1,931 GBP
As of November 6, 2026
Save £723 GBP (27%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £2,681 GBP at Michael Trio · As of October 27, 2026
View at Michael Trio

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6555632824. Listed at 6 retailers as of October 31, 2026, with a 37% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
K
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555632824
Dimensions8.70 × 5.62 × 3.85 mm
L/W Ratio1.55
Top View
8.70 mm5.62 mm1.51 ctK / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555632824
Side View
Table 62.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £2,681 GBP|Low: £1,913 GBP|High: £2,773 GBP|Avg: £2,376 GBP|-3.3%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£1,931 GBP
Retailer 2£1,948 GBP
Retailer 5£2,401 GBP
Retailer 6£2,650 GBP
Retailer 4£2,654 GBP
Michael Trio£2,681 GBP

44 data points across 6 retailers

6 retailers£1,931 GBP to £2,654 GBP

A
Cheapest Retailer
-
£1,931 GBP
A
Retailer 2
-
£1,948 GBP
View
B+
Retailer 3
-
£2,401 GBP
View
B+
Retailer 4
-
£2,650 GBP
View
B+
Retailer 5
-
£2,654 GBP
View
Most Expensive
Michael Trio
1569442392 · Oct 27
£2,681 GBP
SGD 4,850 SGD
View
Price last confirmed 10 days ago
5 more retailers have this diamond
Prices start from £1,931 GBPSave up to £723 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
£1,931 GBP