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Oval|Natural|GIA

1.50ct D SI1 Oval Natural Diamond

ID • D/SI1 • GIA 6545526638

Certificate GIA 6545526638

Diamond specifications and retailer prices

From $10,831 AUD
HK$59,300 HKD
As of November 1, 2026
Save $12,782 AUD (54%) vs most expensive(unlock to see where)
28 retailers carry this diamond
Most expensive: $23,612 AUD 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 $10,831 to $23,612, a $12,782 spread on the same certified stone. NZ Jewellers lists it at $23,612. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $13,209 AUD|Low: $11,064 AUD|High: $19,887 AUD|Avg: $14,225 AUD|-1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 6$11,090 AUD
Retailer 11$11,544 AUD
Retailer 2$12,549 AUD
Retailer 3$13,030 AUD
Retailer 9$13,048 AUD
Retailer 5$13,079 AUD
Retailer 1$13,209 AUD
Retailer 4$15,423 AUD
Retailer 10$16,145 AUD
Retailer 8$17,345 AUD
Retailer 7$19,676 AUD

24 data points across 11 retailers

28 retailers$10,831 AUD to $23,612 AUD

A
Cheapest Retailer
-
$10,831 AUD
HK$59,300 HKD
A
Retailer 2
-
$11,090 AUD
₹740,224 INR
View
B+
Retailer 3
-
$11,544 AUD
$8,090 USD
View
Retailer 4
-
$11,980 AUD
SGD 11,346 SGD
View
Price last confirmed 21 days ago
B+
Retailer 5
-
$12,201 AUD
$8,551 USD
View
B+
Retailer 6
-
$12,549 AUD
SGD 11,885 SGD
View
B+
Retailer 7
-
$12,585 AUD
$8,820 USD
View
B+
Retailer 8
-
$12,921 AUD
$9,055 USD
View
B+
Retailer 9
-
$13,030 AUD
$9,132 USD
View
Final sale: no returns
B+
Retailer 10
-
$13,032 AUD
$9,133 USD
View
Retailer 11
-
$13,048 AUD
View
Price last confirmed 9 days ago
B+
Retailer 12
-
$13,079 AUD
£7,217 GBP
View
B+
Retailer 13
-
$13,209 AUD
£7,289 GBP
View
B+
Retailer 14
-
$14,111 AUD
$9,890 USD
View
B+
Retailer 15
-
$14,118 AUD
$9,894 USD
View
B
Retailer 16
-
$14,336 AUD
$10,047 USD
View
B+
Retailer 17
-
$14,437 AUD
$10,118 USD
View
B+
Retailer 18
-
$14,451 AUD
$10,128 USD
View
B+
Retailer 19
-
$14,484 AUD
$10,151 USD
View
B+
Retailer 20
-
$14,844 AUD
$10,403 USD
View
B+
Retailer 21
-
$15,423 AUD
€10,294 EUR
View
B
Retailer 22
-
$16,289 AUD
$11,416 USD
View
Retailer 23
-
$16,880 AUD
$11,830 USD
View
Price last confirmed 62 days ago
B
Retailer 24
-
$17,345 AUD
ZAR 196,374 ZAR
View
B
Retailer 25
-
$19,676 AUD
£10,858 GBP
View
Retailer 26
-
$20,390 AUD
$14,290 USD
View
Price last confirmed 64 days ago
B
Retailer 27
-
$20,777 AUD
$14,561 USD
View
Most Expensive
B
NZ Jewellers
fc839084-9101-4a39-9073-29773117fff1 · Oct 30
$23,612 AUD
$16,548 USD
View
27 more retailers have this diamond
Prices start from $10,831 AUDSave up to $12,782 AUD

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
$10,831 AUD