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Cushion|Natural|GIA

1.50ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 6341834366

Certificate GIA 6341834366

Diamond specifications and retailer prices

From £4,381 GBP
$5,870 USD
As of November 2, 2026
Save £3,835 GBP (47%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £8,216 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6341834366. Listed at 23 retailers as of November 1, 2026, with prices from £4,381 to £8,216, a £3,835 spread on the same certified stone. MOH London lists it at £8,216. 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
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6341834366
Dimensions6.74 × 6.48 × 4.39 mm
L/W Ratio1.04
Top View
6.74 mm6.48 mm1.50 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6341834366
Side View
Table 60.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 67.8%

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 2
Current: £8,216 GBP|Low: £4,276 GBP|High: £8,315 GBP|Avg: £5,670 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 3£4,381 GBP
Retailer 7£4,444 GBP
Retailer 9£4,658 GBP
Retailer 10£4,930 GBP
Retailer 11£4,930 GBP
Retailer 8£4,971 GBP
Retailer 4£5,558 GBP
Retailer 6£5,684 GBP
Retailer 2£6,440 GBP
Retailer 5£7,242 GBP
MOH London£8,216 GBP

44 data points across 11 retailers

23 retailers£4,381 GBP to £8,216 GBP

B+
Cheapest Retailer
-
£4,381 GBP
$5,870 USD
Retailer 2
-
£4,444 GBP
$5,955 USD
View
Price last confirmed 14 days ago
B
Retailer 3
-
£4,566 GBP
$6,118 USD
View
B
Retailer 4
-
£4,580 GBP
A$9,442 AUD
View
B
Retailer 5
-
£4,658 GBP
$6,241 USD
View
B
Retailer 6
-
£4,723 GBP
$6,328 USD
View
B
Retailer 7
-
£4,930 GBP
$6,605 USD
View
Final sale: no returns
B
Retailer 8
-
£4,930 GBP
$6,606 USD
View
B
Retailer 9
-
£4,941 GBP
$6,620 USD
View
B
Retailer 10
-
£4,971 GBP
$6,661 USD
View
B
Retailer 11
-
£5,249 GBP
$7,033 USD
View
B
Retailer 12
-
£5,423 GBP
A$11,178 AUD
View
B
Retailer 13
-
£5,440 GBP
$7,289 USD
View
B
Retailer 14
-
£5,558 GBP
View
B
Retailer 15
-
£5,572 GBP
CA$10,368 CAD
View
Retailer 16
-
£5,684 GBP
A$11,717 AUD
View
Price last confirmed 11 days ago
B
Retailer 17
-
£5,821 GBP
$7,800 USD
View
B
Retailer 18
-
£5,821 GBP
$7,800 USD
View
B
Retailer 19
-
£6,015 GBP
$8,060 USD
View
B
Retailer 20
-
£6,440 GBP
€8,218 EUR
View
Retailer 21
-
£6,495 GBP
$8,702 USD
View
Price last confirmed 10 days ago
B
Retailer 22
-
£7,242 GBP
ZAR 156,770 ZAR
View
Most Expensive
B
MOH London
3474A897C · Nov 1
£8,216 GBP
View
22 more retailers have this diamond
Prices start from £4,381 GBPSave up to £3,835 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
£4,381 GBP