CaratHunter
Plans
Marquise|Natural|GIA

1.21ct J SI1 Marquise Natural Diamond

GD • J/SI1 • GIA 2554338825

Certificate GIA 2554338825

Diamond specifications and retailer prices

From HK$20,260 HKD
As of October 31, 2026
Save HK$17,501 HKD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$37,761 HKD at Helzberg Diamonds · As of November 3, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2554338825. Listed at 14 retailers as of October 31, 2026, with prices from HK$20,260 to HK$37,761, a HK$17,501 spread on the same certified stone. Helzberg Diamonds lists it at HK$37,761. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
J
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.87°
Pavilion angle39.78°
OriginNatural
Grading LabGIA
CertificateGIA 2554338825
Dimensions9.83 × 5.39 × 3.60 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.83 mm5.39 mm1.21 ctJ / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554338825
Side View
Table 59.0%Crown 43.87°Girdle: STK-VTKPavilion 39.78°Culet: NoneDepth 66.6%

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 31
Current: HK$37,761 HKD|Low: HK$20,260 HKD|High: HK$40,127 HKD|Avg: HK$27,123 HKD|-5.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 4HK$20,260 HKD
Retailer 2HK$20,753 HKD
Retailer 9HK$21,796 HKD
Retailer 5HK$22,039 HKD
Retailer 6HK$23,473 HKD
Retailer 13HK$23,920 HKD
Retailer 11HK$25,652 HKD
Retailer 3HK$25,965 HKD
Retailer 12HK$26,436 HKD
Retailer 8HK$26,475 HKD
Retailer 7HK$33,497 HKD
Retailer 10HK$35,660 HKD
Helzberg DiamondsHK$37,761 HKD

40 data points across 13 retailers

14 retailersHK$20,260 HKD to HK$37,761 HKD

B+
Cheapest Retailer
-
HK$20,260 HKD
B+
Retailer 2
-
HK$20,753 HKD
View
B+
Retailer 3
-
HK$21,796 HKD
View
B+
Retailer 4
-
HK$22,039 HKD
View
B+
Retailer 5
-
HK$23,473 HKD
View
B
Retailer 6
-
HK$23,920 HKD
View
B
Retailer 7
-
HK$25,652 HKD
View
B
Retailer 8
-
HK$25,965 HKD
View
B
Retailer 9
-
HK$26,436 HKD
View
B
Retailer 10
-
HK$26,475 HKD
View
B
Retailer 11
-
HK$28,732 HKD
View
B
Retailer 12
-
HK$33,497 HKD
View
B
Retailer 13
-
HK$35,660 HKD
View
Most Expensive
B
Helzberg Diamonds
XZRILLKJJOOIL · Nov 3
HK$37,761 HKD
$4,818 USD
View
13 more retailers have this diamond
Prices start from HK$20,260 HKDSave up to HK$17,501 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+
1.21ct Marquise
HK$20,260 HKD