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Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

GD • I/SI1 • GIA 6555372452

Certificate GIA 6555372452

Diamond specifications and retailer prices

From £3,687 GBP
HK$38,600 HKD
As of November 1, 2026
Save £4,747 GBP (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £8,434 GBP at NZ Jewellers · As of October 30, 2026
View at NZ Jewellers

About this 1.5ct natural oval diamond

This 1.5ct 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6555372452. Listed at 22 retailers as of October 30, 2026, with prices from £3,687 to £8,434, a £4,747 spread on the same certified stone. NZ Jewellers lists it at £8,434. 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

1.50
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6555372452
Dimensions9.02 × 6.46 × 4.00 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Indented Natural, Crystal, Cloud, Natural, Extra Facet
Top View
9.02 mm6.46 mm1.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryGood
FluorescenceFaint
CertificateGIA 6555372452
Side View
Table 67.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 61.9%

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: £8,434 GBP|Low: £3,659 GBP|High: £8,434 GBP|Avg: £5,301 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 1, 2026
Retailer 17£3,687 GBP
Retailer 2£4,030 GBP
Retailer 12£4,397 GBP
Retailer 7£4,585 GBP
Retailer 8£4,654 GBP
Retailer 11£4,655 GBP
Retailer 19£4,676 GBP
Retailer 13£4,785 GBP
Retailer 15£4,837 GBP
Retailer 9£5,013 GBP
Retailer 4£5,043 GBP
Retailer 5£5,121 GBP
Retailer 6£5,162 GBP
Retailer 3£5,191 GBP
Retailer 10£5,227 GBP
Retailer 18£5,511 GBP
Retailer 20£5,818 GBP
Retailer 16£6,196 GBP
Retailer 14£7,429 GBP
NZ Jewellers£8,434 GBP

21 data points across 20 retailers

22 retailers£3,687 GBP to £8,434 GBP

B+
Cheapest Retailer
-
£3,687 GBP
HK$38,600 HKD
B+
Retailer 2
-
£4,030 GBP
₹514,216 INR
View
Retailer 3
-
£4,286 GBP
SGD 7,761 SGD
View
Price last confirmed 18 days ago
B+
Retailer 4
-
£4,397 GBP
$5,892 USD
View
B
Retailer 5
-
£4,585 GBP
$6,143 USD
View
B
Retailer 6
-
£4,654 GBP
$6,236 USD
View
Final sale: no returns
B
Retailer 7
-
£4,655 GBP
$6,237 USD
View
B
Retailer 8
-
£4,676 GBP
$6,265 USD
View
B
Retailer 9
-
£4,785 GBP
View
B
Retailer 10
-
£4,837 GBP
View
B
Retailer 11
-
£5,013 GBP
$6,717 USD
View
Retailer 12
-
£5,038 GBP
A$10,386 AUD
View
Price last confirmed 28 days ago
B
Retailer 13
-
£5,043 GBP
$6,757 USD
View
B
Retailer 14
-
£5,121 GBP
$6,861 USD
View
B
Retailer 15
-
£5,162 GBP
$6,917 USD
View
B
Retailer 16
-
£5,191 GBP
$6,955 USD
View
B
Retailer 17
-
£5,227 GBP
$7,004 USD
View
B
Retailer 18
-
£5,511 GBP
€7,032 EUR
View
B
Retailer 19
-
£5,818 GBP
$7,796 USD
View
B
Retailer 20
-
£6,196 GBP
ZAR 134,118 ZAR
View
B
Retailer 21
-
£7,429 GBP
View
Most Expensive
C
NZ Jewellers
2cf0b5d8-a7d3-4fe4-b12a-441e57ae46e8 · Oct 30
£8,434 GBP
$11,301 USD
View
21 more retailers have this diamond
Prices start from £3,687 GBPSave up to £4,747 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+
1.50ct Oval
£3,687 GBP