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Oval|Natural|GIA

1.51ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 7543674333

Certificate GIA 7543674333

Diamond specifications and retailer prices

From £1,951 GBP
As of November 6, 2026
Save £2,605 GBP (57%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,556 GBP at NZ Jewellers · As of November 5, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7543674333. Listed at 16 retailers as of November 5, 2026, with prices from £1,951 to £4,556, a £2,605 spread on the same certified stone. NZ Jewellers lists it at £4,556. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 7543674333
Dimensions9.06 × 6.35 × 4.01 mm
L/W Ratio1.43
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
9.06 mm6.35 mm1.51 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7543674333
Side View
Table 58.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 63.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £2,536 GBP|Low: £1,951 GBP|High: £4,425 GBP|Avg: £3,117 GBP|-1.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£1,951 GBP
Retailer 1£2,536 GBP
Retailer 3£2,706 GBP
Retailer 2£3,044 GBP
Retailer 4£3,192 GBP
Retailer 5£4,360 GBP

37 data points across 6 retailers

16 retailers£1,951 GBP to £4,556 GBP

A
Cheapest Retailer
-
£1,951 GBP
A
Retailer 2
-
£2,232 GBP
View
A
Retailer 3
-
£2,321 GBP
View
A
Retailer 4
-
£2,518 GBP
View
A
Retailer 5
-
£2,536 GBP
View
Retailer 6
-
£2,615 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£2,615 GBP
View
A
Retailer 8
-
£2,706 GBP
View
Retailer 9
-
£2,715 GBP
View
Price last confirmed 10 days ago
B+
Retailer 10
-
£2,716 GBP
View
B+
Retailer 11
-
£2,792 GBP
View
B+
Retailer 12
-
£3,017 GBP
View
B+
Retailer 13
-
£3,044 GBP
View
B+
Retailer 14
-
£3,192 GBP
View
B
Retailer 15
-
£4,360 GBP
View
Most Expensive
B
NZ Jewellers
a167fbd1-0cc6-498b-b95c-4f6b8a2bffc5 · Nov 5
£4,556 GBP
$6,098 USD
View
15 more retailers have this diamond
Prices start from £1,951 GBPSave up to £2,605 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.

A
1.51ct Oval
£1,951 GBP