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Oval|Natural|GIA

1.51ct J SI1 Oval Natural Diamond

EX • J/SI1 • GIA 2556755740

Certificate GIA 2556755740

Diamond specifications and retailer prices

From £3,355 GBP
$4,495 USD
As of November 1, 2026
Save £3,216 GBP (49%) vs most expensive(unlock to see where)
26 retailers carry this diamond
Most expensive: £6,570 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.51ct natural oval diamond

This 1.51ct natural oval sits in the one-and-a-half to two carat band, graded J 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 2556755740. Listed at 26 retailers as of October 29, 2026, with prices from £3,355 to £6,570, a £3,216 spread on the same certified stone. MOH London lists it at £6,570. 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

1.51
Carat
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556755740
Dimensions8.77 × 6.26 × 3.93 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Twinning Wisp, Knot, Crystal, Feather, Indented Natural, Needle
Top View
8.77 mm6.26 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2556755740
Side View
Table 61.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 62.7%

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 1
Current: £6,570 GBP|Low: £3,465 GBP|High: £6,623 GBP|Avg: £4,502 GBP|+0.3%
MOH London
Retailer 2
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Retailer 11
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Retailer 19
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Retailer 23
Retailer 24
November 2, 2026
Retailer 11£3,465 GBP
Retailer 9£3,505 GBP
Retailer 24£3,505 GBP
Retailer 12£3,549 GBP
Retailer 10£3,709 GBP
Retailer 6£3,765 GBP
Retailer 8£3,974 GBP
Retailer 7£4,019 GBP
Retailer 19£4,019 GBP
Retailer 23£4,070 GBP
Retailer 22£4,089 GBP
Retailer 17£4,116 GBP
Retailer 15£4,211 GBP
Retailer 2£4,268 GBP
Retailer 18£4,327 GBP
Retailer 4£4,493 GBP
Retailer 14£4,493 GBP
Retailer 16£4,549 GBP
Retailer 21£4,637 GBP
Retailer 5£4,642 GBP
Retailer 13£4,737 GBP
Retailer 20£5,450 GBP
Retailer 3£6,426 GBP
MOH London£6,570 GBP

34 data points across 24 retailers

26 retailers£3,355 GBP to £6,570 GBP

B+
Cheapest Retailer
-
£3,355 GBP
$4,495 USD
B+
Retailer 2
-
£3,465 GBP
$4,643 USD
View
B+
Retailer 3
-
£3,505 GBP
$4,696 USD
View
B+
Retailer 4
-
£3,505 GBP
$4,697 USD
View
B+
Retailer 5
-
£3,549 GBP
$4,755 USD
View
B+
Retailer 6
-
£3,652 GBP
A$7,527 AUD
View
B+
Retailer 7
-
£3,663 GBP
$4,908 USD
View
B+
Retailer 8
-
£3,709 GBP
$4,970 USD
View
Final sale: no returns
B+
Retailer 9
-
£3,765 GBP
$5,045 USD
View
B
Retailer 10
-
£3,974 GBP
$5,325 USD
View
B+
Retailer 11
-
£4,019 GBP
$5,385 USD
View
B
Retailer 12
-
£4,019 GBP
$5,385 USD
View
B
Retailer 13
-
£4,089 GBP
$5,479 USD
View
Retailer 14
-
£4,116 GBP
A$8,484 AUD
View
Price last confirmed 23 days ago
B
Retailer 15
-
£4,211 GBP
$5,642 USD
View
B+
Retailer 16
-
£4,268 GBP
View
B
Retailer 17
-
£4,327 GBP
View
B
Retailer 18
-
£4,493 GBP
$6,020 USD
View
B
Retailer 19
-
£4,493 GBP
$6,020 USD
View
B
Retailer 20
-
£4,549 GBP
$6,095 USD
View
B
Retailer 21
-
£4,637 GBP
$6,213 USD
View
B
Retailer 22
-
£4,642 GBP
$6,220 USD
View
B
Retailer 23
-
£4,737 GBP
€6,045 EUR
View
B
Retailer 24
-
£5,450 GBP
ZAR 117,978 ZAR
View
B
Retailer 25
-
£6,426 GBP
$8,611 USD
View
Most Expensive
B
MOH London
23DAD2790 · Oct 29
£6,570 GBP
View
25 more retailers have this diamond
Prices start from £3,355 GBPSave up to £3,216 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 Oval
£3,355 GBP