Radiant|Natural|GIA

1.50ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 7551892979

Certificate GIA 7551892979

Diamond specifications and retailer prices

From $11,487 AUD
$8,070 USD
As of October 28, 2026
Save $8,761 AUD (43%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $20,248 AUD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.5ct natural radiant diamond

This 1.5ct natural radiant sits in the one-and-a-half to two carat band, graded E 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 7551892979. Listed at 11 retailers as of October 27, 2026, with prices from $11,487 to $20,248, a $8,761 spread on the same certified stone. NZ Jewellers lists it at $20,248. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7551892979
Dimensions7.99 × 5.68 × 3.76 mm
L/W Ratio1.41
Girdle conditionPolished
Top View
7.99 mm5.68 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7551892979
Side View
Table 69.0%CrownGirdle: THK-VTKPavilionCuletDepth 66.2%

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 28
Current: $13,369 AUD|Low: $11,135 AUD|High: $19,202 AUD|Avg: $14,173 AUD|-0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 7$11,487 AUD
Retailer 8$11,973 AUD
Retailer 4$12,147 AUD
Retailer 1$13,369 AUD
Retailer 5$14,653 AUD
Retailer 6$15,185 AUD
Retailer 3$15,242 AUD
Retailer 2$19,075 AUD

39 data points across 8 retailers

11 retailers$11,487 AUD to $20,248 AUD

B+
Cheapest Retailer
-
$11,487 AUD
$8,070 USD
B+
Retailer 2
-
$11,973 AUD
CA$11,683 CAD
View
B+
Retailer 3
-
$12,147 AUD
$8,534 USD
View
Final sale: no returns
B+
Retailer 4
-
$13,161 AUD
$9,246 USD
View
B+
Retailer 5
-
$13,363 AUD
$9,388 USD
View
B+
Retailer 6
-
$13,369 AUD
£7,395 GBP
View
B+
Retailer 7
-
$14,653 AUD
$10,294 USD
View
B
Retailer 8
-
$15,185 AUD
$10,668 USD
View
B+
Retailer 9
-
$15,242 AUD
€10,198 EUR
View
B
Retailer 10
-
$19,075 AUD
£10,552 GBP
View
Most Expensive
B
NZ Jewellers
aec22f1a-bd22-49de-8010-c898d40344e1 · Oct 27
$20,248 AUD
$14,225 USD
View
10 more retailers have this diamond
Prices start from $11,487 AUDSave up to $8,761 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 Radiant
$11,487 AUD