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Cushion|Natural|GIA

1.50ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 5212917870

Certificate GIA 5212917870

Diamond specifications and retailer prices

From £3,191 GBP
$4,275 USD
As of October 31, 2026
Save £3,527 GBP (53%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: £6,717 GBP at MOH London · As of November 1, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5212917870. Listed at 24 retailers as of October 31, 2026, with prices from £3,191 to £6,717, a £3,527 spread on the same certified stone. MOH London lists it at £6,717. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5212917870
Dimensions6.22 × 6.14 × 4.53 mm
L/W Ratio1.01
Top View
6.22 mm6.14 mm1.50 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5212917870
Side View
Table 63.0%CrownGirdle: ThickPavilionCulet: NoneDepth 73.8%

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: £6,717 GBP|Low: £3,359 GBP|High: £6,798 GBP|Avg: £4,362 GBP|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£3,359 GBP
Retailer 6£3,381 GBP
Retailer 9£3,820 GBP
Retailer 3£3,974 GBP
Retailer 2£4,114 GBP
Retailer 7£4,240 GBP
Retailer 5£4,772 GBP
Retailer 4£5,184 GBP
MOH London£6,717 GBP

36 data points across 9 retailers

24 retailers£3,191 GBP to £6,717 GBP

A
Cheapest Retailer
-
£3,191 GBP
$4,275 USD
A
Retailer 2
-
£3,295 GBP
$4,415 USD
View
A
Retailer 3
-
£3,332 GBP
$4,464 USD
View
B+
Retailer 4
-
£3,359 GBP
$4,501 USD
View
Final sale: no returns
B+
Retailer 5
-
£3,373 GBP
$4,520 USD
View
B+
Retailer 6
-
£3,381 GBP
$4,530 USD
View
B+
Retailer 7
-
£3,582 GBP
CA$6,667 CAD
View
B+
Retailer 8
-
£3,588 GBP
$4,808 USD
View
B+
Retailer 9
-
£3,590 GBP
$4,810 USD
View
B+
Retailer 10
-
£3,820 GBP
$5,119 USD
View
B+
Retailer 11
-
£3,974 GBP
View
B+
Retailer 12
-
£4,015 GBP
$5,379 USD
View
B+
Retailer 13
-
£4,026 GBP
$5,394 USD
View
B+
Retailer 14
-
£4,114 GBP
View
Retailer 15
-
£4,240 GBP
A$8,740 AUD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
£4,276 GBP
$5,730 USD
View
B+
Retailer 17
-
£4,276 GBP
$5,730 USD
View
B
Retailer 18
-
£4,418 GBP
$5,920 USD
View
Retailer 19
-
£4,653 GBP
$6,234 USD
View
Price last confirmed 9 days ago
B+
Retailer 20
-
£4,772 GBP
€6,090 EUR
View
B
Retailer 21
-
£4,859 GBP
$6,510 USD
View
B
Retailer 22
-
£5,184 GBP
ZAR 112,213 ZAR
View
B
Retailer 23
-
£6,108 GBP
$8,184 USD
View
Most Expensive
B
MOH London
8641C0CA0 · Nov 1
£6,717 GBP
View
23 more retailers have this diamond
Prices start from £3,191 GBPSave up to £3,527 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
£3,191 GBP