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Cushion|Natural|GIA

1.51ct K SI2 Cushion Natural Diamond

GD • K/SI2 • GIA 2546327241

Certificate GIA 2546327241

Diamond specifications and retailer prices

From £1,180 GBP
As of November 6, 2026
Save £325 GBP (22%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £1,505 GBP at Michael Trio · As of November 6, 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 2546327241. Listed at 5 retailers as of November 6, 2026, with prices from £1,180 to £1,505, a £325 spread on the same certified stone. Michael Trio lists it at £1,505. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2546327241
Dimensions6.50 × 6.12 × 4.21 mm
L/W Ratio1.06
Top View
6.50 mm6.12 mm1.51 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 2546327241
Side View
Table 62.0%CrownGirdle: THK-ETKPavilionCulet: NoneDepth 68.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,505 GBP|Low: £1,124 GBP|High: £1,733 GBP|Avg: £1,363 GBP|-13.1%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 3£1,180 GBP
Retailer 6£1,257 GBP
Retailer 5£1,259 GBP
Retailer 4£1,304 GBP
Retailer 2£1,409 GBP
Michael Trio£1,505 GBP

19 data points across 6 retailers

5 retailers£1,180 GBP to £1,505 GBP

B+
Cheapest Retailer
-
£1,180 GBP
Final sale: no returns
Retailer 2
-
£1,259 GBP
View
Price last confirmed 39 days ago
B+
Retailer 3
-
£1,304 GBP
View
B+
Retailer 4
-
£1,409 GBP
View
Most Expensive
B+
Michael Trio
3640061647 · Nov 6
£1,505 GBP
SGD 2,723 SGD
View
4 more retailers have this diamond
Prices start from £1,180 GBPSave up to £325 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.

B+
1.51ct Cushion
£1,180 GBP