Oval|Natural|GIA

1.50ct F SI1 Oval Natural Diamond

ID • F/SI1 • GIA 6551643708

Certificate GIA 6551643708

Diamond specifications and retailer prices

From £5,555 GBP
As of October 28, 2026
17 retailers carry this diamond
Most expensive: £10,097 GBP at NZ Jewellers · As of September 19, 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551643708. Listed at 17 retailers as of October 28, 2026. 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

1.50
Carat
F
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551643708
Dimensions8.81 × 6.31 × 4.00 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Crystal, Indented Natural, Needle, Pinpoint, Cloud, Natural
Top View
8.81 mm6.31 mm1.50 ctF / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551643708
Side View
Table 63.0%CrownGirdle: VTN-VTKPavilionCulet: NoneDepth 63.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: £5,555 GBP|Low: £4,523 GBP|High: £8,515 GBP|Avg: £5,912 GBP|-1.3%
Retailer 1
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
October 28, 2026
Retailer 4£4,593 GBP
Retailer 11£4,770 GBP
Retailer 10£5,048 GBP
Retailer 6£5,049 GBP
Retailer 5£5,056 GBP
Retailer 2£5,421 GBP
Retailer 1£5,555 GBP
Retailer 8£5,666 GBP
Retailer 3£5,783 GBP
Retailer 14£5,785 GBP
Retailer 9£6,561 GBP
Retailer 7£7,350 GBP
Retailer 12£7,504 GBP
Retailer 13£8,425 GBP

31 data points across 14 retailers

17 retailers

Retailer 1
-
£4,593 GBP
$6,164 USD
Price last confirmed 12 days ago
Retailer 2
-
£4,770 GBP
$6,401 USD
View
Price last confirmed 8 days ago
Retailer 3
-
£5,056 GBP
$6,785 USD
View
Price last confirmed 6 days ago
Retailer 4
-
£5,376 GBP
$7,214 USD
View
Price last confirmed 9 days ago
Retailer 5
-
£5,421 GBP
$7,275 USD
View
Price last confirmed 9 days ago
Retailer 6
-
£5,469 GBP
$7,339 USD
View
Price last confirmed 44 days ago
B+
Retailer 7
-
£5,555 GBP
View
Retailer 8
-
£5,666 GBP
View
Price last confirmed 7 days ago
Retailer 9
-
£5,783 GBP
$7,760 USD
View
Price last confirmed 17 days ago
Retailer 10
-
£5,785 GBP
A$11,943 AUD
View
Price last confirmed 12 days ago
Retailer 11
-
£6,104 GBP
$8,191 USD
View
Price last confirmed 7 days ago
Retailer 12
-
£6,310 GBP
$8,468 USD
View
Price last confirmed 45 days ago
Retailer 13
-
£6,561 GBP
€8,385 EUR
View
Price last confirmed 7 days ago
Retailer 14
-
£7,350 GBP
ZAR 159,349 ZAR
View
Price last confirmed 7 days ago
Retailer 15
-
£7,504 GBP
$10,070 USD
View
Price last confirmed 7 days ago
Retailer 16
-
£8,425 GBP
View
Price last confirmed 7 days ago
Most Expensive
NZ Jewellers
6fce348c-e558-47a0-864b-183a4a9177ac · Sep 19
£10,097 GBP
$13,549 USD
View
Price last confirmed 44 days ago
16 more retailers have this diamond
Prices start from £5,555 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
£5,555 GBP