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Round|Natural|GIA

1.50ct D SI1 Round Natural Diamond

EX • D/SI1 • GIA 1549181187

Certificate GIA 1549181187

Diamond specifications and retailer prices

From $9,876 AUD
HK$54,200 HKD
As of October 30, 2026
Save $8,451 AUD (46%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $21,878 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round 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 and certified by GIA 1549181187. Listed at 23 retailers as of October 29, 2026, with a 86% 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
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1549181187
Dimensions7.28 × 7.23 × 4.57 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cavity, Needle, Pinpoint
Top View
7.28 mm7.23 mm1.50 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1549181187
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 63.0%

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: Oct 30
Current: $10,543 AUD|Low: $10,516 AUD|High: $18,450 AUD|Avg: $13,680 AUD|-1.3%
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$10,543 AUD
Retailer 11$11,178 AUD
Retailer 2$11,660 AUD
Retailer 4$12,019 AUD
Retailer 3$12,075 AUD
Retailer 9$12,326 AUD
Retailer 5$12,624 AUD
Retailer 6$14,332 AUD
Retailer 10$15,786 AUD
Retailer 8$17,456 AUD
Retailer 7$18,327 AUD

28 data points across 11 retailers

23 retailers$9,876 AUD to $18,327 AUD

A
Cheapest Retailer
-
$9,876 AUD
HK$54,200 HKD
A
Retailer 2
-
$10,543 AUD
₹705,336 INR
View
A
Retailer 3
-
$10,681 AUD
$7,503 USD
View
Retailer 4
-
$10,924 AUD
SGD 10,370 SGD
View
Price last confirmed 19 days ago
A
Retailer 5
-
$11,178 AUD
$7,852 USD
View
A
Retailer 6
-
$11,660 AUD
SGD 11,068 SGD
View
B+
Retailer 7
-
$12,014 AUD
$8,439 USD
View
B+
Retailer 8
-
$12,015 AUD
$8,440 USD
View
B+
Retailer 9
-
$12,019 AUD
£6,648 GBP
View
Retailer 10
-
$12,075 AUD
$8,482 USD
View
Price last confirmed 15 days ago
B+
Retailer 11
-
$12,075 AUD
$8,482 USD
View
Final sale: no returns
B+
Retailer 12
-
$12,115 AUD
$8,510 USD
View
Retailer 13
-
$12,326 AUD
View
Price last confirmed 8 days ago
B+
Retailer 14
-
$12,624 AUD
£6,983 GBP
View
Retailer 15
-
$13,081 AUD
$9,189 USD
View
Price last confirmed 13 days ago
Retailer 16
-
$13,282 AUD
$9,330 USD
View
Price last confirmed 16 days ago
B+
Retailer 17
-
$13,370 AUD
$9,392 USD
View
B+
Retailer 18
-
$14,332 AUD
€9,588 EUR
View
Retailer 19
-
$15,093 AUD
$10,602 USD
View
Price last confirmed 13 days ago
Retailer 20
-
$15,786 AUD
ZAR 179,145 ZAR
View
Price last confirmed 9 days ago
B
Retailer 21
-
$17,456 AUD
£9,655 GBP
View
B
Retailer 22
-
$18,327 AUD
£10,137 GBP
View
Most Expensive
NZ Jewellers
1e0e1df4-f9c0-4109-8f23-b540956e2e6e · Oct 17
$21,878 AUD
$15,368 USD
View
Price last confirmed 14 days ago
22 more retailers have this diamond
Prices start from $9,876 AUDSave up to $8,451 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 Round
$9,876 AUD