Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

GD • I/SI1 • GIA 1435731098

Certificate GIA 1435731098

Diamond specifications and retailer prices

From £3,315 GBP
HK$34,700 HKD
As of October 31, 2026
Save £4,010 GBP (55%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £7,325 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 1435731098. Listed at 20 retailers as of October 30, 2026, with prices from £3,315 to £7,325, a £4,010 spread on the same certified stone. NZ Jewellers lists it at £7,325. 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
SymmetryExcellent
FluorescenceFaint
Crown angle45.07°
Pavilion angle33.29°
OriginNatural
Grading LabGIA
CertificateGIA 1435731098
Dimensions8.94 × 6.08 × 3.71 mm
L/W Ratio1.47
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
8.94 mm6.08 mm1.50 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1435731098
Side View
Table 58.0%Crown 45.07°Girdle: VTK-VTKPavilion 33.29°Culet: NoneDepth 61.1%

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: Oct 31
Current: £7,325 GBP|Low: £3,286 GBP|High: £7,325 GBP|Avg: £4,617 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
October 31, 2026
Retailer 13£3,315 GBP
Retailer 3£3,706 GBP
Retailer 6£3,820 GBP
Retailer 11£3,868 GBP
Retailer 19£3,890 GBP
Retailer 9£4,013 GBP
Retailer 4£4,043 GBP
Retailer 18£4,086 GBP
Retailer 14£4,237 GBP
Retailer 5£4,379 GBP
Retailer 17£4,379 GBP
Retailer 20£4,379 GBP
Retailer 7£4,496 GBP
Retailer 12£4,541 GBP
Retailer 15£4,786 GBP
Retailer 8£5,053 GBP
Retailer 2£5,381 GBP
Retailer 16£6,461 GBP
Retailer 10£6,620 GBP
NZ Jewellers£7,325 GBP

37 data points across 20 retailers

20 retailers£3,315 GBP to £7,325 GBP

B+
Cheapest Retailer
-
£3,315 GBP
HK$34,700 HKD
B+
Retailer 2
-
£3,706 GBP
$4,966 USD
View
B+
Retailer 3
-
£3,820 GBP
$5,118 USD
View
B+
Retailer 4
-
£3,868 GBP
SGD 7,004 SGD
View
B+
Retailer 5
-
£3,890 GBP
SGD 7,043 SGD
View
B+
Retailer 6
-
£4,013 GBP
$5,377 USD
View
B+
Retailer 7
-
£4,043 GBP
$5,417 USD
View
Final sale: no returns
B+
Retailer 8
-
£4,086 GBP
$5,475 USD
View
B+
Retailer 9
-
£4,237 GBP
View
B+
Retailer 10
-
£4,379 GBP
$5,868 USD
View
B+
Retailer 11
-
£4,379 GBP
$5,868 USD
View
B+
Retailer 12
-
£4,379 GBP
$5,868 USD
View
B+
Retailer 13
-
£4,496 GBP
$6,024 USD
View
Retailer 14
-
£4,541 GBP
A$9,360 AUD
View
Price last confirmed 28 days ago
B+
Retailer 15
-
£4,786 GBP
€6,107 EUR
View
B
Retailer 16
-
£5,053 GBP
$6,771 USD
View
B
Retailer 17
-
£5,381 GBP
ZAR 116,480 ZAR
View
B
Retailer 18
-
£6,461 GBP
View
B
Retailer 19
-
£6,620 GBP
$8,870 USD
View
Most Expensive
C
NZ Jewellers
35ee2c48-f2cc-4f63-ab2b-e45bda7046bc · Oct 30
£7,325 GBP
$9,815 USD
View
19 more retailers have this diamond
Prices start from £3,315 GBPSave up to £4,010 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
£3,315 GBP