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Radiant|Natural|GIA

1.51ct E SI1 Radiant Natural Diamond

EX • E/SI1 • GIA 7521758243

Certificate GIA 7521758243

Diamond specifications and retailer prices

From HK$63,415 HKD
$8,082 USD
As of October 29, 2026
Save HK$24,149 HKD (28%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$87,563 HKD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

About this 1.51ct natural radiant diamond

This 1.51ct 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 7521758243. Listed at 14 retailers as of October 29, 2026, with prices from HK$63,415 to HK$87,563, a HK$24,149 spread on the same certified stone. 77 Diamonds lists it at HK$87,563. 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
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.82°
Pavilion angle30.53°
OriginNatural
Grading LabGIA
CertificateGIA 7521758243
Dimensions7.47 × 5.67 × 3.84 mm
L/W Ratio1.32
Girdle conditionThick
Key to symbols
Crystal, Cloud, Needle
Top View
7.47 mm5.67 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7521758243
Side View
Table 67.0%Crown 44.82°Girdle: STK-THKPavilion 30.53°Culet: NoneDepth 67.7%

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 29
Current: HK$87,563 HKD|Low: HK$62,559 HKD|High: HK$88,006 HKD|Avg: HK$78,234 HKD|+1.7%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 5HK$63,415 HKD
Retailer 3HK$71,920 HKD
Retailer 4HK$79,468 HKD
Retailer 2HK$83,211 HKD
Retailer 6HK$86,738 HKD
77 DiamondsHK$87,563 HKD

37 data points across 6 retailers

14 retailersHK$63,415 HKD to HK$87,563 HKD

B+
Cheapest Retailer
-
HK$63,415 HKD
$8,082 USD
B+
Retailer 2
-
HK$66,004 HKD
$8,412 USD
View
B+
Retailer 3
-
HK$66,850 HKD
A$13,107 AUD
View
B+
Retailer 4
-
HK$68,358 HKD
$8,712 USD
View
B+
Retailer 5
-
HK$71,138 HKD
$9,066 USD
View
B+
Retailer 6
-
HK$71,920 HKD
$9,166 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$79,468 HKD
$10,128 USD
View
B
Retailer 8
-
HK$83,211 HKD
$10,605 USD
View
Retailer 9
-
HK$83,211 HKD
$10,605 USD
View
Price last confirmed 15 days ago
B
Retailer 10
-
HK$84,113 HKD
$10,720 USD
View
B
Retailer 11
-
HK$84,113 HKD
$10,720 USD
View
B
Retailer 12
-
HK$86,738 HKD
$11,054 USD
View
B
Retailer 13
-
HK$86,938 HKD
$11,080 USD
View
Most Expensive
B
77 Diamonds
RADZHFUHPAGP · Oct 30
HK$87,563 HKD
£8,787 GBP
View
13 more retailers have this diamond
Prices start from HK$63,415 HKDSave up to HK$24,149 HKD

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+
1.51ct Radiant
HK$63,415 HKD