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Cushion|Natural|GIA

0.38ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6552405721

Certificate GIA 6552405721

Diamond specifications and retailer prices

From £398 GBP
SGD 720 SGD
As of October 31, 2026
Save £579 GBP (59%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £976 GBP at Queensmith · As of October 28, 2026
View at Queensmith

About this 0.38ct natural cushion diamond

This 0.38ct natural cushion sits in the sub-half-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6552405721. Listed at 11 retailers as of October 28, 2026, with prices from £398 to £976, a £579 spread on the same certified stone. Queensmith lists it at £976. 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

0.38
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6552405721
Dimensions4.06 × 4.07 × 2.71 mm
L/W Ratio1.00
Top View
4.06 mm4.07 mm0.38 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6552405721
Side View
Table 62.0%CrownGirdlePavilionCulet: NoneDepth 66.7%

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: Oct 31
Current: £976 GBP|Low: £398 GBP|High: £1,044 GBP|Avg: £653 GBP|-0.5%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 1, 2026
Retailer 8£398 GBP
Retailer 7£511 GBP
Retailer 2£522 GBP
Retailer 9£536 GBP
Retailer 10£566 GBP
Retailer 11£576 GBP
Retailer 5£614 GBP
Retailer 6£641 GBP
Retailer 3£665 GBP
Retailer 4£954 GBP
Queensmith£976 GBP

36 data points across 11 retailers

11 retailers£398 GBP to £976 GBP

A
Cheapest Retailer
-
£398 GBP
SGD 720 SGD
B+
Retailer 2
-
£511 GBP
$685 USD
View
B+
Retailer 3
-
£522 GBP
View
B+
Retailer 4
-
£536 GBP
$718 USD
View
B+
Retailer 5
-
£566 GBP
View
B+
Retailer 6
-
£576 GBP
$771 USD
View
B+
Retailer 7
-
£614 GBP
€784 EUR
View
B+
Retailer 8
-
£641 GBP
ZAR 13,873 ZAR
View
Retailer 9
-
£665 GBP
A$1,370 AUD
View
Price last confirmed 28 days ago
B
Retailer 10
-
£954 GBP
View
Most Expensive
B
Queensmith
6552405721 · Oct 28
£976 GBP
View
10 more retailers have this diamond
Prices start from £398 GBPSave up to £579 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
0.38ct Cushion
£398 GBP