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Round|Lab Grown|GIA

5.51ct E IF Round Lab Grown Diamond

EX • E/IF • GIA 3515142642

Certificate GIA 3515142642

Diamond specifications and retailer prices

From HK$129,478 HKD
$16,503 USD
As of October 29, 2026
Save HK$270,339 HKD (68%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$399,817 HKD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.51ct lab-grown round diamond

This 5.51ct lab-grown round sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 3515142642. Listed at 16 retailers as of October 29, 2026, with prices from HK$129,478 to HK$399,817, a HK$270,339 spread on the same certified stone. Taylor and Hart lists it at HK$399,817. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.51
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 3515142642
Dimensions11.37 × 11.35 × 6.96 mm
L/W Ratio1.00
Star length50%
Lower girdle80%
Top View
11.37 mm11.35 mm5.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3515142642
Side View
Table 58.0%Crown 35°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.3%

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 29
Current: HK$266,400 HKD|Low: HK$107,054 HKD|High: HK$1,043,384 HKD|Avg: HK$296,098 HKD|-5.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Taylor and Hart
October 31, 2026
Retailer 8HK$114,273 HKD
Retailer 10HK$129,478 HKD
Retailer 13HK$132,584 HKD
Retailer 2HK$133,918 HKD
Retailer 5HK$142,603 HKD
Retailer 3HK$150,190 HKD
Retailer 11HK$155,376 HKD
Retailer 7HK$223,916 HKD
Retailer 6HK$255,857 HKD
Retailer 1HK$266,400 HKD
Retailer 9HK$385,730 HKD
Taylor and HartHK$399,817 HKD
Retailer 12HK$580,033 HKD
Retailer 4HK$1,043,384 HKD

28 data points across 14 retailers

16 retailersHK$129,478 HKD to HK$399,817 HKD

Retailer 1
-
HK$114,273 HKD
$14,565 USD
Price last confirmed 13 days ago
A
Retailer 2
-
HK$129,478 HKD
$16,503 USD
View
A
Retailer 3
-
HK$132,584 HKD
$16,899 USD
View
A
Retailer 4
-
HK$133,918 HKD
$17,069 USD
View
B+
Retailer 5
-
HK$142,603 HKD
$18,176 USD
View
B+
Retailer 6
-
HK$150,190 HKD
$19,143 USD
View
Retailer 7
-
HK$150,190 HKD
$19,143 USD
View
Price last confirmed 15 days ago
B+
Retailer 8
-
HK$155,376 HKD
$19,804 USD
View
B+
Retailer 9
-
HK$184,711 HKD
$23,543 USD
View
B+
Retailer 10
-
HK$223,916 HKD
$28,540 USD
View
B+
Retailer 11
-
HK$255,857 HKD
£25,678 GBP
View
B
Retailer 12
-
HK$266,400 HKD
€32,338 EUR
View
B
Retailer 13
-
HK$385,730 HKD
$49,165 USD
View
Most Expensive
B
Taylor and Hart
2OHVJ2C · Oct 30
HK$399,817 HKD
$50,960 USD
View
13 more retailers have this diamond
Prices start from HK$129,478 HKDSave up to HK$270,339 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.

A
5.51ct Round
HK$129,478 HKD