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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

VG • I/SI1 • GIA 1543770021

Certificate GIA 1543770021

Diamond specifications and retailer prices

From £3,870 GBP
$5,193 USD
As of November 2, 2026
Save £3,738 GBP (49%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,608 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct 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 1543770021. Listed at 20 retailers as of November 1, 2026, with prices from £3,870 to £7,608, a £3,738 spread on the same certified stone. MOH London lists it at £7,608. 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

1.51
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543770021
Dimensions7.59 × 6.22 × 4.30 mm
L/W Ratio1.22
Girdle conditionFaceted
Culet sizeNone
Top View
7.59 mm6.22 mm1.51 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543770021
Side View
Table 69.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.1%

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: £7,608 GBP|Low: £3,870 GBP|High: £7,700 GBP|Avg: £5,065 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
Retailer 12
November 2, 2026
Retailer 11£3,870 GBP
Retailer 10£4,080 GBP
Retailer 7£4,118 GBP
Retailer 12£4,610 GBP
Retailer 9£4,678 GBP
Retailer 4£4,713 GBP
Retailer 3£4,765 GBP
Retailer 5£4,952 GBP
Retailer 8£5,064 GBP
Retailer 2£5,641 GBP
Retailer 6£6,345 GBP
MOH London£7,608 GBP

43 data points across 12 retailers

20 retailers£3,870 GBP to £7,608 GBP

B+
Cheapest Retailer
-
£3,870 GBP
$5,193 USD
B+
Retailer 2
-
£4,034 GBP
$5,413 USD
View
B+
Retailer 3
-
£4,080 GBP
$5,475 USD
View
B+
Retailer 4
-
£4,134 GBP
$5,548 USD
View
Retailer 5
-
£4,230 GBP
$5,676 USD
View
Price last confirmed 18 days ago
B+
Retailer 6
-
£4,240 GBP
A$8,754 AUD
View
B
Retailer 7
-
£4,610 GBP
$6,186 USD
View
B
Retailer 8
-
£4,678 GBP
$6,278 USD
View
B
Retailer 9
-
£4,713 GBP
CA$8,784 CAD
View
B
Retailer 10
-
£4,765 GBP
A$9,838 AUD
View
B
Retailer 11
-
£4,783 GBP
$6,418 USD
View
B+
Retailer 12
-
£4,952 GBP
View
Retailer 13
-
£5,064 GBP
A$10,455 AUD
View
Price last confirmed 29 days ago
B
Retailer 14
-
£5,112 GBP
$6,860 USD
View
B
Retailer 15
-
£5,112 GBP
$6,860 USD
View
B
Retailer 16
-
£5,283 GBP
$7,090 USD
View
B
Retailer 17
-
£5,641 GBP
€7,210 EUR
View
Retailer 18
-
£5,693 GBP
$7,639 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
£6,345 GBP
ZAR 137,544 ZAR
View
Most Expensive
B
MOH London
36872112B · Nov 1
£7,608 GBP
View
19 more retailers have this diamond
Prices start from £3,870 GBPSave up to £3,738 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+
1.51ct Cushion
£3,870 GBP