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Cushion|Natural|GIA

1.53ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6415582061

Certificate GIA 6415582061

Diamond specifications and retailer prices

From £4,996 GBP
$6,705 USD
As of November 2, 2026
Save £1,769 GBP (26%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £6,765 GBP at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.53ct natural cushion diamond

This 1.53ct 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6415582061. Listed at 4 retailers as of October 30, 2026, with prices from £4,996 to £6,765, a £1,769 spread on the same certified stone. 77 Diamonds lists it at £6,765. 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

1.53
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6415582061
Dimensions6.82 × 6.46 × 4.41 mm
L/W Ratio1.06
Top View
6.82 mm6.46 mm1.53 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6415582061
Side View
Table 70.0%CrownGirdlePavilionCuletDepth 68.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £6,765 GBP|Low: £4,945 GBP|High: £6,810 GBP|Avg: £5,871 GBP|+1.8%
77 Diamonds
Retailer 2
October 30, 2026
Retailer 2£4,996 GBP
77 Diamonds£6,765 GBP

33 data points across 2 retailers

4 retailers£4,996 GBP to £6,765 GBP

B
Cheapest Retailer
-
£4,996 GBP
$6,705 USD
B
Retailer 2
-
£5,200 GBP
$6,978 USD
View
B
Retailer 3
-
£5,327 GBP
A$10,998 AUD
View
Most Expensive
B
77 Diamonds
CUSMBDEFZQW8X · Oct 30
£6,765 GBP
View
3 more retailers have this diamond
Prices start from £4,996 GBPSave up to £1,769 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
1.53ct Cushion
£4,996 GBP