Oval|Natural|GIA

1.50ct D SI1 Oval Natural Diamond

ID • D/SI1 • GIA 6545526638

Certificate GIA 6545526638

Diamond specifications and retailer prices

From £5,665 GBP
HK$59,300 HKD
As of October 30, 2026
Save £6,685 GBP (54%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: £12,350 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 D 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 6545526638. Listed at 28 retailers as of October 30, 2026, with prices from £5,665 to £12,350, a £6,685 spread on the same certified stone. NZ Jewellers lists it at £12,350. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.56°
Pavilion angle36.73°
OriginNatural
Grading LabGIA
CertificateGIA 6545526638
Dimensions8.60 × 6.26 × 4.07 mm
L/W Ratio1.37
Top View
8.60 mm6.26 mm1.50 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545526638
Side View
Table 64.0%Crown 41.56°Girdle: STK-VTKPavilion 36.73°Culet: NoneDepth 65.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £5,802 GBP|Low: £5,787 GBP|High: £10,402 GBP|Avg: £7,430 GBP|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 1£5,802 GBP
Retailer 11£6,038 GBP
Retailer 2£6,564 GBP
Retailer 3£6,815 GBP
Retailer 8£6,825 GBP
Retailer 6£6,898 GBP
Retailer 5£6,930 GBP
Retailer 4£8,069 GBP
Retailer 10£8,444 GBP
Retailer 9£8,912 GBP
Retailer 7£10,347 GBP

24 data points across 11 retailers

28 retailers£5,665 GBP to £12,350 GBP

A
Cheapest Retailer
-
£5,665 GBP
HK$59,300 HKD
A
Retailer 2
-
£5,802 GBP
₹740,384 INR
View
B+
Retailer 3
-
£6,038 GBP
$8,090 USD
View
Retailer 4
-
£6,266 GBP
SGD 11,346 SGD
View
Price last confirmed 20 days ago
B+
Retailer 5
-
£6,382 GBP
$8,551 USD
View
B+
Retailer 6
-
£6,564 GBP
SGD 11,885 SGD
View
B+
Retailer 7
-
£6,583 GBP
$8,820 USD
View
B+
Retailer 8
-
£6,758 GBP
$9,055 USD
View
B+
Retailer 9
-
£6,815 GBP
$9,132 USD
View
Final sale: no returns
B+
Retailer 10
-
£6,816 GBP
$9,133 USD
View
Retailer 11
-
£6,825 GBP
A$14,068 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
£6,898 GBP
View
B+
Retailer 13
-
£6,930 GBP
View
B+
Retailer 14
-
£7,381 GBP
$9,890 USD
View
B+
Retailer 15
-
£7,384 GBP
$9,894 USD
View
B
Retailer 16
-
£7,498 GBP
$10,047 USD
View
B+
Retailer 17
-
£7,551 GBP
$10,118 USD
View
B+
Retailer 18
-
£7,559 GBP
$10,128 USD
View
B+
Retailer 19
-
£7,576 GBP
$10,151 USD
View
B+
Retailer 20
-
£7,764 GBP
$10,403 USD
View
B+
Retailer 21
-
£8,069 GBP
€10,297 EUR
View
B
Retailer 22
-
£8,520 GBP
$11,416 USD
View
Retailer 23
-
£8,829 GBP
$11,830 USD
View
Price last confirmed 61 days ago
Retailer 24
-
£8,912 GBP
ZAR 192,901 ZAR
View
Price last confirmed 10 days ago
B
Retailer 25
-
£10,347 GBP
View
Retailer 26
-
£10,665 GBP
$14,290 USD
View
Price last confirmed 63 days ago
B
Retailer 27
-
£10,867 GBP
$14,561 USD
View
Most Expensive
B
NZ Jewellers
fc839084-9101-4a39-9073-29773117fff1 · Oct 30
£12,350 GBP
$16,548 USD
View
27 more retailers have this diamond
Prices start from £5,665 GBPSave up to £6,685 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.

A
1.50ct Oval
£5,665 GBP