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Oval|Natural|GIA

1.51ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2316765230

Certificate GIA 2316765230

Diamond specifications and retailer prices

From £4,471 GBP
$6,000 USD
As of November 2, 2026
Save £5,593 GBP (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £10,065 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.51ct natural oval diamond

This 1.51ct natural oval 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 2316765230. Listed at 22 retailers as of October 30, 2026, with prices from £4,471 to £10,065, a £5,593 spread on the same certified stone. NZ Jewellers lists it at £10,065. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2316765230
Dimensions9.00 × 6.65 × 4.02 mm
L/W Ratio1.35
Top View
9.00 mm6.65 mm1.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2316765230
Side View
Table 59.0%CrownGirdle: VTN-MEDPavilionCulet: NoneDepth 60.4%

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: £10,065 GBP|Low: £4,471 GBP|High: £10,065 GBP|Avg: £6,333 GBP
NZ Jewellers
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£4,471 GBP
Retailer 9£4,804 GBP
Retailer 4£5,032 GBP
Retailer 3£5,452 GBP
Retailer 10£5,535 GBP
Retailer 5£5,676 GBP
Retailer 8£5,766 GBP
Retailer 12£6,290 GBP
Retailer 2£6,573 GBP
Retailer 6£7,392 GBP
Retailer 7£8,431 GBP
NZ Jewellers£10,065 GBP

44 data points across 12 retailers

22 retailers£4,471 GBP to £10,065 GBP

B+
Cheapest Retailer
-
£4,471 GBP
$6,000 USD
B+
Retailer 2
-
£4,663 GBP
$6,258 USD
View
B+
Retailer 3
-
£4,754 GBP
$6,380 USD
View
B+
Retailer 4
-
£4,804 GBP
$6,447 USD
View
Final sale: no returns
B+
Retailer 5
-
£4,823 GBP
$6,473 USD
View
B+
Retailer 6
-
£5,002 GBP
CA$9,323 CAD
View
B+
Retailer 7
-
£5,032 GBP
$6,753 USD
View
B+
Retailer 8
-
£5,041 GBP
$6,765 USD
View
B+
Retailer 9
-
£5,074 GBP
$6,809 USD
View
B
Retailer 10
-
£5,358 GBP
$7,190 USD
View
B
Retailer 11
-
£5,452 GBP
$7,316 USD
View
B
Retailer 12
-
£5,535 GBP
$7,428 USD
View
B
Retailer 13
-
£5,558 GBP
$7,458 USD
View
B+
Retailer 14
-
£5,676 GBP
View
B+
Retailer 15
-
£5,757 GBP
$7,725 USD
View
Retailer 16
-
£5,766 GBP
A$11,904 AUD
View
Price last confirmed 11 days ago
B
Retailer 17
-
£6,290 GBP
$8,441 USD
View
B
Retailer 18
-
£6,573 GBP
€8,400 EUR
View
B
Retailer 19
-
£6,630 GBP
$8,897 USD
View
B
Retailer 20
-
£7,392 GBP
ZAR 160,262 ZAR
View
B
Retailer 21
-
£8,431 GBP
View
Most Expensive
B
NZ Jewellers
7b5bc6cf-00be-4a75-8a6e-4a63f09f1019 · Oct 30
£10,065 GBP
$13,506 USD
View
21 more retailers have this diamond
Prices start from £4,471 GBPSave up to £5,593 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
£4,471 GBP