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Oval|Natural|GIA

1.50ct H SI1 Oval Natural Diamond

VG • H/SI1 • GIA 6451963361

Certificate GIA 6451963361

Diamond specifications and retailer prices

From £5,435 GBP
As of November 4, 2026
Save £6,835 GBP (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £12,270 GBP at NZ Jewellers · As of November 5, 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6451963361. Listed at 20 retailers as of November 4, 2026, with prices from £5,435 to £12,270, a £6,835 spread on the same certified stone. NZ Jewellers lists it at £12,270. 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
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6451963361
Dimensions9.07 × 6.71 × 3.87 mm
L/W Ratio1.35
Top View
9.07 mm6.71 mm1.50 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6451963361
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 57.7%

Caratlytics Score

How it works →
B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £12,270 GBP|Low: £5,350 GBP|High: £12,270 GBP|Avg: £7,752 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 6, 2026
Retailer 8£5,435 GBP
Retailer 12£6,134 GBP
Retailer 11£6,186 GBP
Retailer 4£6,646 GBP
Retailer 2£6,744 GBP
Retailer 3£6,748 GBP
Retailer 10£6,779 GBP
Retailer 6£7,594 GBP
Retailer 9£8,014 GBP
Retailer 5£8,950 GBP
Retailer 7£10,196 GBP
NZ Jewellers£12,270 GBP

44 data points across 12 retailers

20 retailers£5,435 GBP to £12,270 GBP

B
Cheapest Retailer
-
£5,435 GBP
B
Retailer 2
-
£5,709 GBP
View
B
Retailer 3
-
£5,744 GBP
View
B
Retailer 4
-
£6,104 GBP
View
B
Retailer 5
-
£6,134 GBP
View
Final sale: no returns
Retailer 6
-
£6,135 GBP
View
Price last confirmed 8 days ago
B
Retailer 7
-
£6,186 GBP
View
B
Retailer 8
-
£6,538 GBP
View
B
Retailer 9
-
£6,646 GBP
View
B
Retailer 10
-
£6,744 GBP
View
B
Retailer 11
-
£6,748 GBP
View
Retailer 12
-
£6,779 GBP
View
Price last confirmed 14 days ago
B
Retailer 13
-
£7,172 GBP
View
B
Retailer 14
-
£7,172 GBP
View
B
Retailer 15
-
£7,411 GBP
View
B
Retailer 16
-
£7,594 GBP
View
B
Retailer 17
-
£8,014 GBP
View
B
Retailer 18
-
£8,950 GBP
View
B
Retailer 19
-
£10,196 GBP
View
Most Expensive
C
NZ Jewellers
b784cdeb-2975-4b7d-ae68-fd714030a062 · Nov 5
£12,270 GBP
$16,423 USD
View
19 more retailers have this diamond
Prices start from £5,435 GBPSave up to £6,835 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
£5,435 GBP