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Cushion|Natural|GIA

1.50ct K SI2 Cushion Natural Diamond

GD • K/SI2 • GIA 6217656757

Certificate GIA 6217656757

Diamond specifications and retailer prices

From £2,555 GBP
As of November 4, 2026
Save £1,134 GBP (31%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,689 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.5ct natural cushion diamond

This 1.5ct 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 6217656757. Listed at 13 retailers as of November 4, 2026, with prices from £2,555 to £3,689, a £1,134 spread on the same certified stone. Yorxs lists it at £3,689. 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

1.50
Carat
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6217656757
Dimensions6.39 × 6.26 × 4.34 mm
L/W Ratio1.02
Top View
6.39 mm6.26 mm1.50 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6217656757
Side View
Table 65.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.4%

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 4
Current: £3,261 GBP|Low: £2,555 GBP|High: £3,699 GBP|Avg: £3,037 GBP|+1.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Yorxs
November 6, 2026
Retailer 3£2,555 GBP
Retailer 5£2,669 GBP
Retailer 7£2,755 GBP
Retailer 2£2,964 GBP
Retailer 4£3,161 GBP
Retailer 6£3,248 GBP
Retailer 1£3,261 GBP
Yorxs£3,689 GBP

44 data points across 8 retailers

13 retailers£2,555 GBP to £3,689 GBP

B+
Cheapest Retailer
-
£2,555 GBP
B+
Retailer 2
-
£2,669 GBP
View
B+
Retailer 3
-
£2,695 GBP
View
B+
Retailer 4
-
£2,722 GBP
View
B+
Retailer 5
-
£2,755 GBP
View
B
Retailer 6
-
£2,919 GBP
View
B
Retailer 7
-
£2,937 GBP
View
B
Retailer 8
-
£2,964 GBP
View
B
Retailer 9
-
£3,161 GBP
View
B
Retailer 10
-
£3,248 GBP
View
B
Retailer 11
-
£3,261 GBP
View
B
Retailer 12
-
£3,307 GBP
View
Most Expensive
B
Yorxs
204430056 · Nov 6
£3,689 GBP
€4,703 EUR
View
12 more retailers have this diamond
Prices start from £2,555 GBPSave up to £1,134 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+
1.50ct Cushion
£2,555 GBP