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Round|Lab Grown|IGI

6.00ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG780662871

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780662871

Diamond specifications and retailer prices

From $12,370 USD
As of October 30, 2026
Save $28,832 USD (70%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $41,202 USD at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 6ct lab-grown round diamond

This 6ct lab-grown round sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780662871 or 780662871. Listed at 12 retailers as of October 30, 2026, with prices from $12,370 to $41,202, a $28,832 spread on the same certified stone. Taylor and Hart lists it at $41,202. 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

6.00
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780662871
Dimensions11.60 × 11.67 × 7.20 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
11.60 mm11.67 mm6.00 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780662871
Side View
Table 56.0%Crown 35.9°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.9%

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 30
Current: $16,595 USD|Low: $11,965 USD|High: $77,976 USD|Avg: $28,778 USD|-14.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
October 30, 2026
Retailer 7$11,965 USD
Retailer 11$12,370 USD
Retailer 2$13,896 USD
Retailer 1$16,595 USD
Retailer 9$18,934 USD
Retailer 5$21,492 USD
Retailer 6$24,154 USD
Retailer 10$24,210 USD
Retailer 4$29,717 USD
Retailer 8$35,686 USD
Retailer 12$39,600 USD
Taylor and Hart$41,202 USD
Retailer 3$77,976 USD

40 data points across 13 retailers

12 retailers$12,370 USD to $41,202 USD

Retailer 1
-
$11,965 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$12,370 USD
View
A
Retailer 3
-
$13,896 USD
View
A
Retailer 4
-
$16,595 USD
£13,067 GBP
View
B+
Retailer 5
-
$18,934 USD
View
B+
Retailer 6
-
$21,492 USD
£16,923 GBP
View
B+
Retailer 7
-
$24,154 USD
€23,004 EUR
View
B+
Retailer 8
-
$24,210 USD
View
Retailer 9
-
$35,686 USD
A$54,901 AUD
View
Price last confirmed 22 days ago
B
Retailer 10
-
$39,600 USD
View
Most Expensive
B
Taylor and Hart
CAN37YA · Oct 30
$41,202 USD
View
10 more retailers have this diamond
Prices start from $12,370 USDSave up to $28,832 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. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
6.00ct Round
$12,370 USD