Radiant|Natural|GIA

1.50ct J SI1 Radiant Natural Diamond

EX • J/SI1 • GIA 6551029978

Certificate GIA 6551029978

Diamond specifications and retailer prices

From €2,658 EUR
HK$23,200 HKD
As of October 31, 2026
Save €3,232 EUR (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €6,135 EUR at NZ Jewellers · As of October 17, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551029978. Listed at 21 retailers as of October 31, 2026, with a 122% 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
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551029978
Dimensions7.43 × 5.72 × 3.99 mm
L/W Ratio1.30
Top View
7.43 mm5.72 mm1.50 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 6551029978
Side View
Table 67.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.8%

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 31
Current: €6,135 EUR|Low: €2,635 EUR|High: €6,300 EUR|Avg: €3,803 EUR|-2.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 14€2,658 EUR
Retailer 13€2,832 EUR
Retailer 8€3,187 EUR
Retailer 17€3,250 EUR
Retailer 7€3,350 EUR
Retailer 15€3,361 EUR
Retailer 2€3,388 EUR
Retailer 5€3,521 EUR
Retailer 11€3,572 EUR
Retailer 9€3,616 EUR
Retailer 6€3,653 EUR
Retailer 4€3,679 EUR
Retailer 16€3,985 EUR
Retailer 3€4,063 EUR
Retailer 12€4,329 EUR
Retailer 10€5,890 EUR
NZ Jewellers€6,135 EUR

22 data points across 17 retailers

21 retailers€2,658 EUR to €5,890 EUR

A
Cheapest Retailer
-
€2,658 EUR
HK$23,200 HKD
A
Retailer 2
-
€2,832 EUR
₹301,283 INR
View
A
Retailer 3
-
€3,187 EUR
SGD 4,811 SGD
View
A
Retailer 4
-
€3,250 EUR
$3,631 USD
View
Final sale: no returns
B+
Retailer 5
-
€3,343 EUR
$3,735 USD
View
B+
Retailer 6
-
€3,350 EUR
SGD 5,058 SGD
View
A
Retailer 7
-
€3,361 EUR
$3,755 USD
View
B+
Retailer 8
-
€3,388 EUR
£2,981 GBP
View
Retailer 9
-
€3,521 EUR
$3,934 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
€3,536 EUR
A$6,078 AUD
View
B+
Retailer 11
-
€3,572 EUR
£3,143 GBP
View
Retailer 12
-
€3,616 EUR
$4,040 USD
View
Price last confirmed 16 days ago
Retailer 13
-
€3,616 EUR
$4,040 USD
View
Price last confirmed 17 days ago
B+
Retailer 14
-
€3,653 EUR
$4,081 USD
View
B+
Retailer 15
-
€3,679 EUR
$4,110 USD
View
Retailer 16
-
€3,902 EUR
A$6,707 AUD
View
Price last confirmed 29 days ago
B+
Retailer 17
-
€3,985 EUR
View
Retailer 18
-
€4,063 EUR
$4,539 USD
View
Price last confirmed 14 days ago
B+
Retailer 19
-
€4,329 EUR
ZAR 78,124 ZAR
View
B
Retailer 20
-
€5,890 EUR
£5,181 GBP
View
Most Expensive
NZ Jewellers
ac931774-ade8-4784-b7b9-72a207a8cfc0 · Oct 17
€6,135 EUR
$6,854 USD
View
Price last confirmed 15 days ago
20 more retailers have this diamond
Prices start from €2,658 EURSave up to €3,232 EUR

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 Radiant
€2,658 EUR