Oval|Natural|GIA

1.50ct I SI1 Oval Natural Diamond

VG • I/SI1 • GIA 6512264839

Certificate GIA 6512264839

Diamond specifications and retailer prices

From £5,123 GBP
$6,864 USD
As of October 30, 2026
Save £5,820 GBP (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £10,943 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 6512264839. Listed at 21 retailers as of October 30, 2026, with prices from £5,123 to £10,943, a £5,820 spread on the same certified stone. NZ Jewellers lists it at £10,943. 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
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40.3°
Pavilion angle38.95°
OriginNatural
Grading LabGIA
CertificateGIA 6512264839
Dimensions8.79 × 6.40 × 3.99 mm
L/W Ratio1.37
Top View
8.79 mm6.40 mm1.50 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6512264839
Side View
Table 56.0%Crown 40.3°Girdle: MED-THKPavilion 38.95°Culet: NoneDepth 62.4%

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 30
Current: £10,943 GBP|Low: £5,123 GBP|High: £10,943 GBP|Avg: £6,529 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
November 1, 2026
Retailer 7£5,123 GBP
Retailer 10£5,123 GBP
Retailer 4£5,463 GBP
Retailer 6£5,471 GBP
Retailer 12£5,714 GBP
Retailer 3£5,828 GBP
Retailer 8£5,865 GBP
Retailer 5£5,927 GBP
Retailer 9£5,956 GBP
Retailer 16£6,018 GBP
Retailer 15£6,196 GBP
Retailer 11£6,208 GBP
Retailer 17£6,274 GBP
Retailer 18£6,839 GBP
Retailer 14£7,150 GBP
Retailer 13£8,038 GBP
Retailer 2£9,118 GBP
NZ Jewellers£10,943 GBP

30 data points across 18 retailers

21 retailers£5,123 GBP to £10,943 GBP

B+
Cheapest Retailer
-
£5,123 GBP
$6,864 USD
B+
Retailer 2
-
£5,123 GBP
$6,864 USD
View
B
Retailer 3
-
£5,463 GBP
$7,320 USD
View
B
Retailer 4
-
£5,471 GBP
$7,331 USD
View
B
Retailer 5
-
£5,517 GBP
$7,392 USD
View
B+
Retailer 6
-
£5,714 GBP
View
B
Retailer 7
-
£5,828 GBP
$7,809 USD
View
B
Retailer 8
-
£5,865 GBP
$7,858 USD
View
B
Retailer 9
-
£5,927 GBP
$7,942 USD
View
B
Retailer 10
-
£6,018 GBP
$8,064 USD
View
Retailer 11
-
£6,196 GBP
A$12,772 AUD
View
Price last confirmed 10 days ago
B
Retailer 12
-
£6,208 GBP
View
B
Retailer 13
-
£6,262 GBP
$8,390 USD
View
B
Retailer 14
-
£6,262 GBP
$8,390 USD
View
B
Retailer 15
-
£6,274 GBP
$8,406 USD
View
B
Retailer 16
-
£6,471 GBP
$8,670 USD
View
B
Retailer 17
-
£6,839 GBP
$9,164 USD
View
B
Retailer 18
-
£7,150 GBP
€9,124 EUR
View
B
Retailer 19
-
£8,038 GBP
ZAR 173,981 ZAR
View
B
Retailer 20
-
£9,118 GBP
View
Most Expensive
C
NZ Jewellers
7de86b7f-e54d-441b-bb4c-d97dde520640 · Oct 30
£10,943 GBP
$14,662 USD
View
20 more retailers have this diamond
Prices start from £5,123 GBPSave up to £5,820 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
£5,123 GBP