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Round|Lab Grown|GIA

6.51ct D FL Round Lab Grown Diamond

EX • D/FL • GIA 2538403883

Certificate GIA 2538403883

Diamond specifications and retailer prices

From $19,274 AUD
$13,539 USD
As of November 1, 2026
Save $68,047 AUD (78%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $87,321 AUD at With Clarity · As of October 31, 2026
View at With Clarity

About this 6.51ct lab-grown round diamond

This 6.51ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by GIA 2538403883. Listed at 10 retailers as of October 31, 2026, with prices from $19,274 to $87,321, a $68,047 spread on the same certified stone. With Clarity lists it at $87,321. 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

6.51
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabGIA
CertificateGIA 2538403883
Dimensions11.88 × 11.83 × 7.44 mm
L/W Ratio1.00
Top View
11.88 mm11.83 mm6.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2538403883
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.8%

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: Nov 1
Current: $26,035 AUD|Low: $18,698 AUD|High: $85,574 AUD|Avg: $39,311 AUD|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
With Clarity
November 1, 2026
Retailer 6$19,274 AUD
Retailer 9$20,746 AUD
Retailer 5$25,803 AUD
Retailer 1$26,035 AUD
Retailer 4$33,843 AUD
Retailer 3$34,380 AUD
Retailer 7$36,000 AUD
Retailer 2$37,716 AUD
Retailer 8$60,259 AUD
With Clarity$85,574 AUD

40 data points across 10 retailers

10 retailers$19,274 AUD to $87,321 AUD

A
Cheapest Retailer
-
$19,274 AUD
$13,539 USD
A
Retailer 2
-
$20,746 AUD
$14,573 USD
View
Retailer 3
-
$25,803 AUD
$18,125 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
$26,035 AUD
£14,400 GBP
View
B+
Retailer 5
-
$33,843 AUD
£18,719 GBP
View
B+
Retailer 6
-
$34,380 AUD
$24,150 USD
View
B+
Retailer 7
-
$36,000 AUD
$25,288 USD
View
B+
Retailer 8
-
$37,716 AUD
€25,232 EUR
View
B
Retailer 9
-
$60,259 AUD
$42,329 USD
View
Most Expensive
B
With Clarity
2538403883 · Oct 31
$87,321 AUD
$61,338 USD
View
9 more retailers have this diamond
Prices start from $19,274 AUDSave up to $68,047 AUD

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
6.51ct Round
$19,274 AUD