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Oval|Natural|GIA

1.50ct D SI1 Oval Natural Diamond

EX • D/SI1 • GIA 2306421205

Certificate GIA 2306421205

Diamond specifications and retailer prices

From $15,204 AUD
$10,680 USD
As of October 30, 2026
Save $13,671 AUD (47%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $28,875 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 2306421205. Listed at 21 retailers as of October 30, 2026, with prices from $15,204 to $28,875, a $13,671 spread on the same certified stone. NZ Jewellers lists it at $28,875. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2306421205
Dimensions8.48 × 6.42 × 4.05 mm
L/W Ratio1.32
Top View
8.48 mm6.42 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2306421205
Side View
Table 62.0%CrownGirdle: VTN-THKPavilionCulet: NoneDepth 63.1%

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: $20,830 AUD|Low: $15,204 AUD|High: $27,384 AUD|Avg: $19,943 AUD|+2.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 8$15,204 AUD
Retailer 6$15,289 AUD
Retailer 7$17,325 AUD
Retailer 2$18,482 AUD
Retailer 5$18,860 AUD
Retailer 1$20,830 AUD
Retailer 4$25,318 AUD
Retailer 3$27,203 AUD

44 data points across 8 retailers

21 retailers$15,204 AUD to $28,875 AUD

B+
Cheapest Retailer
-
$15,204 AUD
$10,680 USD
B+
Retailer 2
-
$15,289 AUD
$10,740 USD
View
B+
Retailer 3
-
$16,075 AUD
$11,292 USD
View
B+
Retailer 4
-
$16,087 AUD
$11,300 USD
View
B+
Retailer 5
-
$16,319 AUD
CA$15,921 CAD
View
B
Retailer 6
-
$16,563 AUD
$11,635 USD
View
B
Retailer 7
-
$17,055 AUD
$11,980 USD
View
B
Retailer 8
-
$17,325 AUD
$12,170 USD
View
B
Retailer 9
-
$18,480 AUD
$12,981 USD
View
B
Retailer 10
-
$18,482 AUD
£10,223 GBP
View
B
Retailer 11
-
$18,769 AUD
$13,184 USD
View
Retailer 12
-
$18,860 AUD
View
Price last confirmed 7 days ago
B
Retailer 13
-
$19,491 AUD
$13,691 USD
View
B
Retailer 14
-
$19,987 AUD
$14,040 USD
View
B
Retailer 15
-
$19,987 AUD
$14,040 USD
View
B
Retailer 16
-
$20,064 AUD
$14,094 USD
View
B
Retailer 17
-
$20,656 AUD
$14,510 USD
View
B
Retailer 18
-
$20,830 AUD
€13,935 EUR
View
B
Retailer 19
-
$25,318 AUD
ZAR 287,306 ZAR
View
B
Retailer 20
-
$27,203 AUD
£15,046 GBP
View
Most Expensive
B
NZ Jewellers
4dee6b99-1099-4e4b-8a60-e1a213751468 · Oct 30
$28,875 AUD
$20,283 USD
View
20 more retailers have this diamond
Prices start from $15,204 AUDSave up to $13,671 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.

B+
1.50ct Oval
$15,204 AUD