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Cushion|Natural|GIA

1.50ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6551192167

Certificate GIA 6551192167

Diamond specifications and retailer prices

From £4,643 GBP
HK$48,600 HKD
As of October 30, 2026
Save £4,083 GBP (47%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £8,726 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two 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 6551192167. Listed at 18 retailers as of October 29, 2026, with prices from £4,643 to £8,726, a £4,083 spread on the same certified stone. MOH London lists it at £8,726. 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

1.50
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551192167
Dimensions7.95 × 5.93 × 3.97 mm
L/W Ratio1.34
Top View
7.95 mm5.93 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551192167
Side View
Table 64.0%CrownGirdle: THN-THKPavilionCulet: NoneDepth 66.9%

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 30
Current: £8,726 GBP|Low: £4,643 GBP|High: £8,829 GBP|Avg: £6,312 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
October 31, 2026
Retailer 3£4,643 GBP
Retailer 10£4,983 GBP
Retailer 14£5,067 GBP
Retailer 7£5,509 GBP
Retailer 2£5,657 GBP
Retailer 5£5,657 GBP
Retailer 4£5,748 GBP
Retailer 9£5,749 GBP
Retailer 8£5,878 GBP
Retailer 15£5,972 GBP
Retailer 6£6,361 GBP
Retailer 11£6,794 GBP
Retailer 13£7,583 GBP
Retailer 12£8,635 GBP
MOH London£8,726 GBP

29 data points across 15 retailers

18 retailers£4,643 GBP to £8,726 GBP

A
Cheapest Retailer
-
£4,643 GBP
HK$48,600 HKD
A
Retailer 2
-
£4,983 GBP
₹635,933 INR
View
B+
Retailer 3
-
£5,067 GBP
$6,789 USD
View
Retailer 4
-
£5,369 GBP
SGD 9,721 SGD
View
Price last confirmed 22 days ago
B+
Retailer 5
-
£5,509 GBP
SGD 9,975 SGD
View
B+
Retailer 6
-
£5,657 GBP
$7,580 USD
View
B+
Retailer 7
-
£5,657 GBP
$7,580 USD
View
B+
Retailer 8
-
£5,677 GBP
$7,607 USD
View
B+
Retailer 9
-
£5,748 GBP
$7,702 USD
View
Final sale: no returns
B+
Retailer 10
-
£5,749 GBP
$7,703 USD
View
B+
Retailer 11
-
£5,878 GBP
View
Retailer 12
-
£5,972 GBP
A$12,311 AUD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£6,320 GBP
A$13,028 AUD
View
B+
Retailer 14
-
£6,361 GBP
$8,523 USD
View
B+
Retailer 15
-
£6,794 GBP
€8,670 EUR
View
B
Retailer 16
-
£7,583 GBP
ZAR 164,139 ZAR
View
B
Retailer 17
-
£8,635 GBP
View
Most Expensive
B
MOH London
8691550C1 · Oct 29
£8,726 GBP
View
17 more retailers have this diamond
Prices start from £4,643 GBPSave up to £4,083 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
1.50ct Cushion
£4,643 GBP