Radiant|Natural|GIA

1.51ct D SI1 Radiant Natural Diamond

EX • D/SI1 • GIA 6555417728

Certificate GIA 6555417728

Diamond specifications and retailer prices

From $4,454 USD
HK$34,800 HKD
Save $5,666 USD (56%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $10,120 USD at NZ Jewellers
View at NZ Jewellers

About this 1.51ct natural radiant diamond

This 1.51ct natural radiant 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 6555417728. Listed at 22 retailers, with prices from $4,454 to $10,120 at NZ Jewellers, a $5,666 spread on the same certified stone. 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

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6555417728
Dimensions7.54 × 5.78 × 3.94 mm
L/W Ratio1.30
Girdle conditionPolished
Top View
7.54 mm5.78 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6555417728
Side View
Table 67.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 68.2%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0-100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Sep 28
Current: $10,120 USD|Low: $4,454 USD|High: $10,822 USD|Avg: $6,105 USD|-6.5%
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
Retailer 18
Retailer 19
Retailer 20
September 30, 2026
Retailer 3$4,454 USD
Retailer 10$4,610 USD
Retailer 5$4,638 USD
Retailer 15$4,824 USD
Retailer 2$5,085 USD
Retailer 9$5,127 USD
Retailer 4$5,135 USD
Retailer 11$5,285 USD
Retailer 6$5,310 USD
Retailer 7$5,329 USD
Retailer 16$5,626 USD
Retailer 13$5,730 USD
Retailer 20$5,802 USD
Retailer 12$5,927 USD
Retailer 14$5,967 USD
Retailer 18$6,476 USD
Retailer 8$7,335 USD
Retailer 17$9,022 USD
Retailer 19$9,485 USD
NZ Jewellers$10,120 USD

22 data points across 20 retailers

22 retailers$4,454 USD to $10,120 USD

A
Cheapest Retailer
-
$4,454 USD
HK$34,800 HKD
A
Retailer 2
-
$4,610 USD
View
A
Retailer 3
-
$4,638 USD
View
A
Retailer 4
-
$4,824 USD
View
A
Retailer 5
-
$5,085 USD
€4,843 EUR
View
A
Retailer 6
-
$5,127 USD
View
A
Retailer 7
-
$5,135 USD
View
A
Retailer 8
-
$5,285 USD
View
Price last confirmed 14 days ago
A
Retailer 9
-
$5,310 USD
View
A
Retailer 10
-
$5,329 USD
View
A
Retailer 11
-
$5,631 USD
£4,434 GBP
View
A
Retailer 12
-
$5,730 USD
£4,512 GBP
View
A
Retailer 13
-
$5,802 USD
View
B+
Retailer 14
-
$5,927 USD
A$9,118 AUD
View
A
Retailer 15
-
$5,967 USD
A$9,180 AUD
View
A
Retailer 16
-
$6,476 USD
€6,168 EUR
View
B+
Retailer 17
-
$6,510 USD
View
Price last confirmed 45 days ago
B+
Retailer 18
-
$6,730 USD
View
Price last confirmed 45 days ago
B+
Retailer 19
-
$7,335 USD
ZAR 118,495 ZAR
View
B+
Retailer 20
-
$9,022 USD
£7,104 GBP
View
B
Retailer 21
-
$9,485 USD
View
Most Expensive
B
NZ Jewellers
713935f0-ce7f-4697-ab11-385cbfb65944 · Sep 30
$10,120 USD
View
21 more retailers have this diamond
Prices start from $4,454 USDSave up to $5,666 USD

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.

A
1.51ct Radiant
$4,454 USD