Oval|Natural|GIA

1.50ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 6551278598

Certificate GIA 6551278598

Diamond specifications and retailer prices

From $6,634 CAD
HK$37,100 HKD
As of October 30, 2026
Save $6,723 CAD (50%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $18,512 CAD at NZ Jewellers · As of August 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 6551278598. Listed at 18 retailers as of October 29, 2026, with a 101% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551278598
Dimensions8.92 × 6.52 × 4.11 mm
L/W Ratio1.37
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
8.92 mm6.52 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551278598
Side View
Table 58.0%CrownGirdlePavilionCulet: NoneDepth 63.0%

Caratlytics Score

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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: $8,650 CAD|Low: $6,634 CAD|High: $14,870 CAD|Avg: $9,346 CAD|-13.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 10$6,634 CAD
Retailer 12$7,637 CAD
Retailer 2$7,865 CAD
Retailer 9$7,887 CAD
Retailer 11$8,323 CAD
Retailer 8$8,381 CAD
Retailer 1$8,650 CAD
Retailer 4$8,715 CAD
Retailer 3$8,915 CAD
Retailer 6$9,837 CAD
Retailer 7$10,981 CAD
Retailer 5$13,357 CAD

35 data points across 12 retailers

18 retailers$6,634 CAD to $13,357 CAD

A
Cheapest Retailer
-
$6,634 CAD
HK$37,100 HKD
Retailer 2
-
$7,637 CAD
SGD 7,388 SGD
View
Price last confirmed 16 days ago
A
Retailer 3
-
$7,865 CAD
$5,630 USD
View
A
Retailer 4
-
$7,887 CAD
$5,646 USD
View
A
Retailer 5
-
$8,323 CAD
$5,958 USD
View
Final sale: no returns
A
Retailer 6
-
$8,381 CAD
$6,000 USD
View
Retailer 7
-
$8,560 CAD
$6,128 USD
View
Price last confirmed 22 days ago
A
Retailer 8
-
$8,650 CAD
£4,876 GBP
View
Retailer 9
-
$8,915 CAD
A$9,818 AUD
View
Price last confirmed 20 days ago
Retailer 10
-
$9,017 CAD
$6,455 USD
View
Price last confirmed 20 days ago
A
Retailer 11
-
$9,837 CAD
€6,707 EUR
View
Retailer 12
-
$10,459 CAD
$7,487 USD
View
Price last confirmed 30 days ago
Retailer 13
-
$10,700 CAD
$7,660 USD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$10,981 CAD
ZAR 126,995 ZAR
View
Retailer 15
-
$12,477 CAD
$8,932 USD
View
Price last confirmed 45 days ago
B+
Retailer 16
-
$13,357 CAD
£7,529 GBP
View
Retailer 17
-
$15,511 CAD
$11,104 USD
View
Price last confirmed 21 days ago
Most Expensive
NZ Jewellers
5d398fb2-e47e-4d8d-9c9c-99cae6142bd8 · Aug 30
$18,512 CAD
$13,252 USD
View
Price last confirmed 61 days ago
17 more retailers have this diamond
Prices start from $6,634 CADSave up to $6,723 CAD

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
$6,634 CAD