Oval|Natural|GIA

1.51ct H SI1 Oval Natural Diamond

GD • H/SI1 • GIA 1548345282

Certificate GIA 1548345282

Diamond specifications and retailer prices

From £4,188 GBP
$5,612 USD
As of November 1, 2026
Save £3,622 GBP (46%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £8,866 GBP at NZ Jewellers · As of September 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1548345282. Listed at 21 retailers as of November 1, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle40.3°
OriginNatural
Grading LabGIA
CertificateGIA 1548345282
Dimensions8.74 × 6.33 × 4.15 mm
L/W Ratio1.38
Girdle conditionFaceted
Top View
8.74 mm6.33 mm1.51 ctH / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1548345282
Side View
Table 60.0%CrownGirdle: STK-VTKPavilion 40.3°Culet: NDepth 65.6%

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: £5,791 GBP|Low: £4,245 GBP|High: £7,904 GBP|Avg: £5,424 GBP|+2.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 7£4,245 GBP
Retailer 2£4,432 GBP
Retailer 11£4,511 GBP
Retailer 9£4,764 GBP
Retailer 10£5,083 GBP
Retailer 4£5,084 GBP
Retailer 8£5,145 GBP
Retailer 3£5,423 GBP
Retailer 1£5,791 GBP
Retailer 6£6,513 GBP
Retailer 5£7,810 GBP

44 data points across 11 retailers

21 retailers£4,188 GBP to £7,810 GBP

B+
Cheapest Retailer
-
£4,188 GBP
$5,612 USD
B+
Retailer 2
-
£4,245 GBP
$5,687 USD
View
B+
Retailer 3
-
£4,432 GBP
$5,939 USD
View
Final sale: no returns
B+
Retailer 4
-
£4,511 GBP
$6,044 USD
View
B
Retailer 5
-
£4,730 GBP
$6,337 USD
View
B+
Retailer 6
-
£4,764 GBP
SGD 8,626 SGD
View
Retailer 7
-
£4,803 GBP
$6,435 USD
View
Price last confirmed 33 days ago
Retailer 8
-
£4,803 GBP
$6,435 USD
View
Price last confirmed 31 days ago
Retailer 9
-
£5,083 GBP
$6,811 USD
View
Price last confirmed 32 days ago
B
Retailer 10
-
£5,083 GBP
$6,811 USD
View
B
Retailer 11
-
£5,084 GBP
View
Retailer 12
-
£5,145 GBP
A$10,606 AUD
View
Price last confirmed 11 days ago
B
Retailer 13
-
£5,344 GBP
$7,160 USD
View
B
Retailer 14
-
£5,344 GBP
$7,160 USD
View
Retailer 15
-
£5,423 GBP
$7,266 USD
View
Price last confirmed 27 days ago
B
Retailer 16
-
£5,515 GBP
$7,390 USD
View
Retailer 17
-
£5,542 GBP
$7,425 USD
View
Price last confirmed 34 days ago
B
Retailer 18
-
£5,791 GBP
€7,390 EUR
View
B
Retailer 19
-
£6,513 GBP
ZAR 140,987 ZAR
View
B
Retailer 20
-
£7,810 GBP
View
Most Expensive
NZ Jewellers
ef9470cc-a929-42fb-af85-2c16b32c810f · Sep 30
£8,866 GBP
$11,880 USD
View
Price last confirmed 32 days ago
20 more retailers have this diamond
Prices start from £4,188 GBPSave up to £3,622 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
£4,188 GBP